File this under Things You Didn't Expect Today: Regis Philbin going all Sitch on Snooki.
No, he didn't discuss Snooki servicing him on live TV ... but he did take his shirt off!
The 80-year-old talk show host disrobed Thursday morning on Live with Regis and Kelly, exposing his pasty man parts in all their glory, leaving the pint-size Jersey Shore guidette princess speechless ... if that's even possible.
Give the man credit for turning the tables on the oft-naked reality star ... but when's Kelly going to wear JWoww-style tops or show off straight vagine like Deena?
That's what we wanna know. Check out the awkward and hilarious Regis video here.