when the penis is smaller than the ball sac. It is if the penis never grew from when he was born but the ball sac did.
Small penis, big sac.
Girl 1: OMG, last night I was going down on Mike for the first time but I had to stop before it even began.
Girl 2: Why is that?
Girl 1: He's got a baby dick no bigger than a jolly rancher.
Girl 2: Oh, that shit is tiny!!!
Prices shown in USD.