An iron butthole is in reference to a tight butthole in which one can withstand a through ramming and bounce back like nothing ever happened.
“It’s colder than an iron butthole in here Lindsey!”
“Yo I just fucked the shit out of this girl, she got that iron butthole.”
“Yo I just fucked the shit out of this girl, she got that iron butthole.”
by OC2594LIFE December 4, 2020