In all of my 27 years on this planet, I've managed to pull off exactly ONE April Fool's Day prank.
I was 4 1/2, making my brother Duncan 2 1/2.
I was sitting at the bottom of the stairs, he was in the hallway, just on the other side of the banister railings. Naked.
"Hey Duncan! YOU HAVE A SPIDER ON YOUR PENIS!"
Duncan freaks the frick out, closely inspects his penis for spiders, weeps, freaks out some more, fondles his junk some more, cries some more.
Sobbing and peen inspection continue.
I laugh at him.