Call it what you will—puke, vomit, upchuck, barf, regurgitation—no matter what it's called, it always has the same sickening effect on people when they see it. Sometime it's like a yawn and can be contagious. That's what makes this the perfect prank, but there's no need to stick your finger down your throat! You can mold some fake vomit with this how-to video.
It's fun for all ages! All you need is a sponge, some food coloring and glue. Use this as inspiration for one of your April Fools Day pranks!