The funniest April fools joke I have done

The funniest April fools joke I have done was this morning I woke up before my dad so he goes to the bathroom every morning so I have this mask. I found a way to make the mask pop out of the toilet when he lifts up the lid. So I tide a string to the lid of the toilet seat, and tide the other end to the mask and then taped the the mask to the inside of the toilet so when you lift the lid it would act