The throbbing, oversized lips of a STD infected mouth. Usually received from putting your mouth on a muffin dick or a vagina muffin (see my definitions for these). They hurt like a bitch and people won't understand what the fuck you're saying. Muffinlips cannot be cured.
"Hey dude I licked my girls vadge and now my lips hurt" "I can't understand you but fuck I think you have muffinlips."
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.