Top Definition
(v) To carry out a laborious task that demands great strain on one's body or muscles.
I was on the jobsite the other day musclefuckin some bags of concrete. -B. Wolfgang
by Shea Holtzman January 18, 2006
5 Words related to musclefuckin

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×