Definitions by yamitl

Mastur-book 

When you use pictures of women in bikinis on Facebook in order to masurbate. Often times done at work where the porn sites are blocked.

Guy 1:Hey, I'm gonna go Mastur-book in the bathroom.

Guy 2: To who?

Guy 1: Lisa. She just added some super hot Panama City pics.

Mastur-book by yamitl May 14, 2011