Sliding Doors is one of 6 promotional shorts for Fanboy and Chum Chum.
Fanboy and Chum Chum see Boog walk through the Frosty Mart doors while they slide. They find out the doors can slide, so they don't have to use their hands. But no matter how much they try, they keep slamming themselves in the doors various times. Boog looks on, saying they'll spend all day doing this, and the short ends with one more shot of the boys, slammed in the doors.