The act of checking a man's masculinity by crying out "MAN CHECK!" then immediately kicking the questioned man's ball sack. If asked why such an act was done, one responds "I found his lack of faith disturbing."
Tim: "Lisa really hasn't called me lately. I hope our relationship isn't in jeopardy"
Tom A: "MAN CHECK!!"
Tim: "What the hell man?!!"
Tom A: "I found your lack of faith disturbing. Grow a pair."