Add Bird Feathers For Better Effect
A cool way to commit suicide would be to cut a hole in a trampoline and then lie face-down under it with a small bomb attached to your stomach. That way it would look like you just jumped way too high and the bomb would make it so that your internals are splattered.

what if the bomb went off in mid-air on a really big jump
I think the point is that you don’t actually jump at all. You just lie underneath it until you explode, thus getting thrust extremely high into the air.
Clearly the hole is so it looks like you jumped super high, and punctured the trampoline on reentry.
Read this before you added in the last little bit for clarification. Kinda’ wrecked the flow, eh? I’d whip on some brackets, or kick out the bomb entirely for MASS FUNNY.
yes. how about if you simply poisoned yourself while lying beneath the hole. with bird feathers or a bit of moon dust…