(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)