Top definition
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."
by UD-Friendly October 19, 2009
Get the mug
Get a Musclesexing mug for your buddy Yasemin.