Definitions by UD-Friendly

Musclesexing 

One muscleman engaging in sex with another man. The muscleman can be either the one initiating the act, the person invited to engage in the act, or both.

"I heard Steve really had a good time last night."

"Yeah. He invited a real hunk over for musclesexing."

Musclesexing by UD-Friendly October 19, 2009