ok i got in a little trouble from doing this prank but it was sooooo worth it. i got this prank from the show homewreckers.
ok the first one you need:
-a new tube of tooth paste
-a small sharp knife
-glue
-and a small clumpled in a ball peice of paper. (about the size of a dime)
ok so open the cap (or twist it off) of new tube of tooth paste. then put glue on the small paper ball and stuff it in the opening where the tooth paste come out. make sure that it covers the whole opening then close the cap (or twist it back on). after that make like four (half an inch) deep cuts on the sides of the tooth paste. or they can be somewhere that the cuts arent noticable. ok so now when someone goes to brush their teeth...well its preety obvious of what will happen.