Top definition
What gay people in the Marine Corps do, instead of physical training.
Guy #1: Hey, thanks for last night Ken, your the bomb diggetty! Wanna fuck again after we PT?
Guy #2: Shut up Bitch!! I ain't running, I'm gonna do Semper Fit! Then I'll make love to you.
by thesituation89 January 19, 2010
Get the mug
Get a semper fit mug for your barber Larisa.