When daddy is away hosting wild and crazy parties in Las Vegas, son will play...
... with Justin Bieber!!!
The singer apparently spent Saturday afternoon hanging with Scott Disick and Kourtney Kardashian’s first child, as Kris Jenner posted a photo on Instagram of Justin and little Mason Dash.
"#Mason & @JustinBieber family pool day!!!" Kris captioned the image. "#Bestbabysitterintheworld."
Bieber, of course, is pretty tight with the Kardashian-Jenner clan.
He is featured in the latest issue of Vogue, getting some fun with Kendall Jenner and also getting felt up by Kendall Jenner.
Justin also shared this picture on his social media account, writing of the tyke climbing all over his back: "Mason is cool as a fan."
Remember, Kourtney was actually neighbors with the pop sensation before Khloe Kardashian chose to purchase his Calabasas house. Hence the relationship between Bieber and Mason.
Kendall, meanwhile, recently referred to Bieber as a "longtime friend of the family."
And with Kourtney possibly on the outs with Disick, one has to wonder: Might she hook up next with Bieber?
SHOULD SHE?!?
Justin Bieber has returned to his old hairstyle. Is this your favorite look on the singer? Or do you just want to see him take his shirt off?
Justin Bieber is trying to grow a mustache. It's impossible not to laugh at the effort.
Justin Bieber posted this photo on "Instagram." He included with it a simple, one-word caption of "Night."
Justin Bieber downs some wine in this Instagram photo. He's not of legal drinking age.
Thank you, Justin Bieber! The singer has posted this HOT photo to Instagram.
Justin Bieber poses here with Diddy. Are the two recording new music together?!?
Justin Bieber has posted yet another shirtless photo of himself. We're guessing fans don't mind.
Justin Bieber posts a sad looking selfie. See the shot now!
Justin Bieber's father Tweeted this photo of his son in bed. It was snapped after Justin turned himself in to authorities in Toronto.
Justin Bieber is smoking a Cubar cigar in this photo. He says he loves them.
Hi there, Justin Bieber! The artist snaps a selfie here while on a snowboarding trip with his pals.
Justin Bieber snaps a selfie in this picture. He's on a snowboarding trip with his friends here.
Justin Bieber now has a tattoo of a compass on his arm. What do you think of it?
There is someone out there who may be cuter than Justin Bieber: his little brother, pictured here.
Justin Bieber and Selena Gomez snuggle up in this Instagram photo. They have such a strong connection.
This was the Most Liked photo on Instagram in 2013. It features Will Smith and Justin Bieber, of course.
Justin Bieber greets a fan in the Philippines in this photo. He played a surprise concert for fans in that nation.
Justin Bieber shows off his latest tattoo in this shirtless Instagram pic. Hardcore, JB.
Justin Bieber was spotted at a brothel. Because that only seems logical for Justin Bieber these days.
That's Justin Bieber in his hoodie. He's paying tribute to his dead hamster.
Justin Bieber rubs Selena Gomez. And not even the wrong way for once.
Yes, Justin Bieber is shirtless. Again. And this time he's joined by friends that include Lil Twist.
This photo says it all on its own: Justin Bieber is totally naked and holding a guitar. Swoon away!
Justin Bieber plants a kiss on the cheek of Ariana Grande in this Twit pic. As you might expect, it upset some Beliebers.
This is a shirtless selfie of Justin Bieber. The singer snaps many of these.
Justin Bieber parties it up here with a couple friends in Chicago. Yes, his shirt is off again.
Justin Bieber and Selena Gomez are back together again. Check out this Instagram pic and see for yourself.
Justin Bieber strikes a shirtless pose in this Twitter photo. He is very good looking.
It's Justin Bieber! And Diddy! And Rick Ross! And TI! This is quite the crew.
Justin Bieber and Lil Wayne are pictured here in the recording studio. They are making music together.
Random BFF alert! Justin Bieber poses here with Craig Robinson.
Justin Bieber is neither shirtless nor looking at the camera in this photo. Still... he's very handsome on Instagram!
Justin Bieber is in Tokyo in this photo. He posted it to Instagram.
Justin Bieber hangs here with Kylie Jenner in Vegas. What would Selena Gomez say?!?
Justin Bieber cozies up here to Madison Beer. It should be noted: she is only 15 years old.
Justin Bieber hugs his mother in this cute photo. The two are very tight.
Here you go, ladies. Justin Bieber has posted a photo of himself in bed.
Justin Bieber and Chris Brown are working on new music together. The former posted this picture to Instagram in June 2014.
This may not be Justin Bieber's best look. It's an extreme close up of the singer on Instagram.
We're up close and personal with Justin Bieber for this selfie. He posted it to his Instagram account.
Justin Bieber posted this photo to Instagram. He included along with it a caption that reads "Talk to me girl."
Justin Bieber is one cool customer. He poses here on Instagram.
Justin Bieber has his arm around Yovanna Ventura in this photo. The caption? Dinner for 2 ;).
Work it out, Justin Bieber! Just take off that shirt please!
Just two pals clubbing! Justin Bieber and Chris Brown party here on the Sunset Strip.
Look at Justin Bieber in his underwear!!! The singer poses here for a hot selfie.
It's a Justin Bieber and Cody Simpson selfie! These two are working on music in the studio.
Justin Bieber snaps a selfie here with model Shanina Shaik. But the singer swears he isn't dating her.
Justin Bieber kicks back and relaxes in this Instagram photo. He's got a tough life, huh?
Justin Bieber is trying to grow some facial hair. He should stop it.
Justin Bieber ponders the meaning of life in this Instagram photo. While not wearing a shirt, of course.
Justin Bieber has never met a selfie he didn't snap. The artist poses here with his guitar. We assume he's about to strum it.
Justin Bieber is teaming with David Hasselhoff. In what capacity? Find out now!
Justin Bieber is just chilling here while in Paris. You know, chilling while trying to act all tough and all cool, that is.
This is how Justin Bieber rolls. The singer has never met a selfie he didn't want to snap.
Justin Bieber is a mama's boy. He wrote as a caption to this cute Instagram photo that he misses his mom.
Justin Bieber rocks some camouflage in this Instagram photo. The artist believes he is very, very tough.
What up, Justin Bieber! The singer poses here on Instagram for an extreme close up.
Who knew Justin Bieber and Mason Disick were friends? Check them out, chilling in the pool!