also known as a Boob screw or a Boob Fuck. where the boy and girl are totally naked and the boy climbs on the girl putting his dick inbetween her Boobs moving back and forth. so it makes a hotdog, with the boobs being the bun and the penis the dog. Ends with cumming on her. aka the mustard.
boy: so do u want a hotdog?
girl: only is it comes with mustard.