Shit that is so big that whoever is taking such a shit is in so much pain that he/she feels like that iron man is crawling out of his/her ass
by Defile January 15, 2015
Get the iron shit mug.(n.) slang for the frozen mud surrounding any vehicle parked on muddy areas and left to freeze in over winter.
by Kung-Fu Jesus May 1, 2004
Get the cast iron cow shit mug.