To have anal sex with someone while they are suffering from diarrhea.
She didn't tell me she had a case of the hot pipes before I entered her from behind.
by Dirty Filthy Sanchez February 01, 2006
A slang term used to describe a sexual act performed by a male on himself, involving the application of hot sauce to one's erect genitals, then proceeding to finance a surgery to have removed half his ribcage, so that he may suck the hot sauce off of his own erect genitals.
"Man it's freezing out today...I really wanna just go home right now and give myself a nice Hot Pipe."
by Matsudasan January 26, 2012