Much like your standard "chili dog", (When a man lays a sloppy shit on a woman's breasts and then titfucks her.) Except this one is usually done on a fat hairy man's chest... or woman if you're lucky enough to find one with a hairy chest.
"Dude, I keep finding chesthair dingle-berries embedded in my pubs after I gave that guy David a Hairy Chili Dog!"