the word "timsy" is a misspelling of "tinfy", wich comes from the hebrew word "tinofet".
"tinofet" means filth, mess, litter, and describes something that is overall gross and slimy.
"timsy" is a ball of "tinofet".
or to put it in simple words - you make a ball out of toilet paper, the size of a fist or so, you soak it in water, and throw it at someones head.
n. A screenshot fabricated by a company to misrepresent the graphics of a game; a combination of the wordsbullshit and screenshot.
Originated from Penny Arcade, a popular gaming webcomic.
-Have you seen Madden 2006 for the Xbox 360? The graphics are gonna be awesome!
-Dude, the Madden 2006 images they showed at E3 were bullshots. It doesn't look nearly as good as they said.