Definitions by crabstein

Smegadon 

Smegadon is the build up of smegma on a mans penis in jurassic proportions.

Girl: Tonight is your luck night big boy.
Boy: (pulls down pants)
Girl: I no longer wish to give you a blow job as it seems you have a large Smegadon residing on the end of your penis.

Smegadon by crabstein December 17, 2008