look up any word, like plopping:
 
1.
Man power, or sometimes "manpower", refers to the power of one's manhood, i.e. his libido, virility and sexual prowess.
1) Rocco's man power is off the charts! Look at him hammer that ass!

2) Here's a viagra to boost your man power for tonight's gangbang
by Ron McD January 01, 2008