I’ll go first. Mine is the instant knockout drug. Like Dexter’s intramuscular injection that causes someone to immediately lose consciousness. Or in the movie Split where there’s the aerosol spray in your face that makes you instantly unconscious. Or pretty much any time someone uses chloroform.
It’s Always Sunny makes a joke about this. They throw a grenade in a car, expecting it to be a huge awesome fiery explosion.
Instead, “poomf” and the car alarm and airbags go off with a little bit of smoke.
“That’s it? Well maybe the cops will think we just like, disintegrated or something I don’t know”