One of the things that annoyed me about A Boy and His Blob is that when the Boy is running and you let off the control pad, he slides a good eight or nine feet, usually right into Instadeath(tm). It's almost as if his shoes are made out of Crisco and the ground is slightly warmed.
But if you ever get to one of the ledges in the game (and there are lots of ledges in the Deadly Caverns portion of the game), and let got of the Cross Pad he'll slide right off the side of the ledge and be suspended in midair.
Which looks like a glitch at first until you wait a few seconds and the Boy looks over
Then looks down
Realizes he's not on solid ground any more, covers his eyes, and falls down
Or you could use that precious few seconds to try and run back over to the ledge. But this only works if you slid off the ledge. If you run off, the Boy will just fall as normal.
Sure it's a little Wile E. Coyote, but who doesn't like watching that guy fall down, too?