gained an inch
When a man does something so tough it makes his penis bigger, he 'gained an inch.' It's not real, but it feels real and that's all that matters.
He gained an inch after he punched a vending machine until it gave him candy.
I gained an inch when I stayed up all night playing video games and still beat my mom at chess.
She gained an inch after she stole the last slice of pizza and challenged the whole class to a dance-off.