When a person starts thinking about or gets ready to eat food and their stomach expands. The act is similar to how a man's penis will enlarge when thinking about or getting ready to perform the act of sex.
Me: Doctor! Help! I jerked off to something i wasn't supposed to jerk off to!
Doctor: Uhhh, What did you watch?
Me: Bandicoot pornos.
Doctor: Im sorry to say but, your dick is becoming a fat boner blaster.
