Definitions by BenDangerwank

K-Penis 

A K-Penis occurs the following day/days after using large amounts of ketamine. The penis grows in length and girth, and erections are both more common and stronger.

"Shit mate, i had 6 wanks one after another before my stiffy went down. Its defo K-penis."

K-Penis by BenDangerwank February 21, 2009