Nail his/your pecker to a fence post.
A very real threat where someone’s pecker is nailed to a fence post, and they have to live with that pain until they die or someone saves them.
He told his brother, 'If you don’t pay me back, I’ll nail your pecker to a fence post.'
The guy at the bar said, 'I’d nail your pecker to a fence post if you kept talking.'
She texted him, 'You better show up or I’ll nail your pecker to a fence post.'