(Verb) A bathroom prank, where sauce packets (Ketchup, Mustard, Mayonaise, Soy Sauce, etc.) are folded up and placed underneath the toilet seat on the notches. The victim naturally undoes their pants, as well as underwear and sits
on the toilet, unbeknownst to them their weight has caused two
ketchup packets to unload their contents directly into his/her undergarments. (warning, this has to be
the worst thing you can do to someone)