STILLER EMBARRASSED BY MANHOOD ROAST

De Niro, Sean 'Diddy' Combs, Tom Cruise, Mike Myers and Judd Apatow all paid mocking tribute to the actor/director at the Museum of Moving Image on Wednesday night (12Nov08).

And De Niro managed the roast of the night, by claiming his Meet the Parents co-star is lacking in the underpants department.

The Raging Bull star claims Stiller exposed himself when he slipped into a pair of Speedos in the 2000 comedy.

He said, "You expect him to be flabby and pale. But he's actually totally buff. But he overcomes this contradiction by having a really tiny... And in that suit, it's apparent to everyone."