The people who were the targets of my pranks were so upset and angry that the fun was all gone so I never attempted pranking anyone again.

In Boy Scouts we had initiation. So at night we led the newbies off on a hike blindfolded and had one of the scouts off in the valley with some firecrackers and eventually we had the hidden Scout pretend to be a landowner and start shouting about how we had better get off his land or he would shoot! And then he let off the firecrackers and scared these kids out of their wits. But then about his third firecracker just went fizzle fizzle pop, which blew the while scene, and nobody was scared anymore.

My ex trying to jump scare me during the scary bits of Alien. I waited for just the right moment to do it back to her. She jumped so suddenly that she put her back out and was in pain for several days.

My favourite one that went right was 'Toucan Man.' I emptied out the laundry basket, found a sweatshirt and jogging pants, and stuffed them with the other clothes. I lay these on the bed, put trainers where the feet should be, and a stuffed toy toucan in the top of the sweatshirt, so that only its head was sticking out through the neck. So at this point, there's a lifesize person with a toucan's head, lying on our bed. Scared the living daylights out of her when she went upstairs.

That's hilarious. I can't recall a prank I did that backfired, but one of my favorites was when a friend and I filled my roommates room to the top with balloons when she went home for the weekend. I sent her a really awkward message saying I hoped she wasn't allergic to latex. Thankfully she wasn't, lol.