a man's thingy
the main man member, the reason for all the baby making, the thing that can make a woman happy or throw her into a rage.
He said it's a man's thingy, and now my sister is writing him a letter about it.
He texted me, 'My dad's thingy is huge, and I'm not even sure what that means.'
She laughed when he called it a man's thingy and asked if he had any other 'things'.