To cover one of your fingers in saliva (extracellular fluid produced and secreted by salivary glands in the mouth.) out in a hot, humid area and shove it up their anal passageway into the rectum and out while saying "Hot will dog!".
by masterwordfulinfluncinghomosap July 4, 2023
A hot dog willy is when you jerk a man off and when he's about to cum, you stuff a hot dog in his urethra while screaming: "Willy!"
by Hot dog willy April 30, 2015