musclefuckin 

(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

musclefuckin by Shea Holtzman January 18, 2006

Musclefuck 

Meaning to use excessive/dangerous force in getting a job done. Usually used when too lazy to do the job right.

Instead of going to find the right size screw, Johnny just musclefucked in the one he had.

Musclefuck by Xiuxiu Chen February 1, 2005