Can be used as a noun or an adjective. A term describing the accidental insertion of a male's penis into a female's bunghole during doggy style sexual intercourse.
Boy: "Roll over baby so I can give you summa dat doggy style action."
Girl: "Sounds great."
Girl: "OUCH OUCH **** WRONG HOLE, EXIT ONLY!"
Boy: "Sorry, I didn't mean to give you a pooter introoder."
Shanita's boyfriend can never figure out where her pussy is so he tends to perform pooter intruder sex on her quite frequently.