The Turtles free The Shredder

Shredder tricks the turtles into releasing him by threatening to expose a VHS tape containing footage of them committing terrible acts, reasoning that he can't show them what's on it because there are no VHS players in the dimension he was imprisoned in. It never occurred to them that maybe he didn't have a tape to begin with (considering he's in a Prison Dimension), and if the tape was real, then he would have no way to show it to anyone, making his threat toothless.

Example of:
Schmuck Bait