noun
1 - The union of a humanass and a toilet, which upon flatulence produces a low-pitched sound (bass) often heard in the presents of a random jackass having a telephone conversation whilst shitting.
Over phone: What was that sound? Was it an Asswoofer? Dude are you talking to me on the shitter, in a public restroom? You ass!
A short form of Assassin's Creed: Brotherhood, a historical fantasy third person action-adventure video game developed by Ubisoft Montreal. Also sounds like a crude sexual reference for the uninformed.
Assbooker is a Facebook term that can be used in any social network. The term comes from being a "smart-ass", hence the Ass, and Facebook, hence the "booker". Basically, an Assbooker is a person who makes smart-ass remark on a Facebook friends staus, picture, etc.
Jack's Facebook Status: "Look at the stars in the beautiful sky!"
- Ben's Comment: "Look at the hair on your cunt!"
- Matt's Comment: "Ben you are such an Assbooker!!!!"