A booty hot dog is when your erect penis is placed in the middle of the ass crack. Her ass cheeks make the bun and your penis is the "meat". A booty hot dog can be executed as foreplay or can be innocently performed with your "morning wood".
When a foosball player slams the ball with full force from the backfield and scores. Or when a foosball player scores with the same man frequently within a short duration of time.
(After the ball slams into the back of the goal.) "HOT BOOT!"
Man that guy has made almost all of my goals! He has a hot boot!