This video pranking tutorial shows how to make a ketchup bomb out of ketchup and aluminum foil. The ketchup bomb will explode on contact with the target and make a sticky, staining, red mess. It's easy to make the ketchup bomb during lunch, saving the practical joke for whenever you're ready to strike. Learn how to make a ketchup bomb by watching this instructional video. Use this as inspiration for one of your April Fools Day pranks!