infantry grip 

A condition where on long deployments away from girlfriend, wife or booty call, a soldier will masturbate with a strong grip and furious motions. Side effects are lasting longer in bed upon returning because compared to infantry grip, any pussy feels loose.

Soldier- have you been banging a black guy while I've been gone?

Girl- no baby! Its just your infantry grip!

infantry grip by comiekiller2012 June 9, 2011