A doug
Doug is the biggest, fattest, most glorious cock in the history of the world. It's not just a cock, it's a legend. Doug is just another word for cock.
That guy has a doug so big, it's like he's got a tent in his pants.
She looked at his doug and said, 'I'm not coming back from this.'
He showed his doug to the whole class and it was the most embarrassing moment ever.