Your namesake said that on the "Film Festival" episode. Funny stuff indeed, particularly after Stan and Wendy, after doubting Cartman, attend a film about, er, Gay cowboys eating pudding.
Announcer: Rob Schneider derp de derp. [next scene: he's walking down a city street when a pretty woman passes by. He looks back at her] Derp de derpity derpy derp. [he runs into a light standard. Next scene: he's a lab technician working with nitrogen. He drinks a strange liquid]Until ONE day, the derpa derpa derpaderp. [Rob is shown dancing like a monkey on the street] Derp de derp. [he's in a house begging like a dog in front of a woman] da teedily dumb.
Rob Schneider: [rises a bit, then starts falling backwards down the stairs] Whoa! [hits the ground floor landing]
Announcer:From the creators of Der, and Tum Ta Tittaly Tum Ta Too, Rob Schneider is Da Derp Dee Derp Da Teetley Derpee Derpee Dumb. Rated PG-13.