When you are walking in a dark room and you run into a table numbing your legs from the waist down. Then you fall backwards into a chair flip out of it and break your nose on the concrete below. When this happens you must say "Sfudcbuker" before someone says windowsill, lest they be allowed to throw you out of one.
You shall have an unfortunate sfudcbuker.
by National Council For Nostration September 01, 2006