When a man stuffs his nuts into his own ass and then bangs his partner with his dick thus simulating a hobo stick.

when you're hungover as shit after a spending a night drunk as a skunk

A sexual manouvre wherein a woman kneels with a man behind her, cock resting on her shoulder and balls falling not unlike the sack of a bum's hobo-stick. She then jerks him off in this way all the while whistling Roger Miller's "King of the Road" or another appropriate song of the trade.