The end of his first short "Trolley Troubles", where Oswald and his trolley fall into a river because of a broken railway...and then it pops back up out of the water, and Oswald pulls out an oar and just rows away with it, like nothing happened.
The end of the short "Tall Timber" definitely counts. Oswald accidentally pisses of a HUGE bear, runs for dear life, and ends up running off screen and into a cave. The bear runs in after him and a fight breaks out. Just when it looks like Ozzie is about to become paste, the bear comes out in a bra and bloomers and runs away in fear. Cue Oswald walking out of the cave with a new fur coat, putting on a top hat, and lighting himself a cigar.