What is the ultimate PRANK???

clear saran wrap or plastic wrap on the toilet seat. My cousins and I didn it to my aunt one april fools day, she got extremely mad.

umm.......
any prank i guess.
i will laugh at all pranks

diet pepsi (with cap)
mentos .. your two main ingrediants

put a piece of string through a mento. pull the string tight over the opening of the bottle and twist the cap off...cut the visible string off and when someone opens it.. the soda will blast all over them

your mom

It is the one at which you laugh loudly and incessantly, quite oblivious of wetting your pants (or panties)