The process of discharging one's bowels onto a man or womans anus and then proceeding to thrust one's penis in the the anus, ramming the feces into their partners anus.
"I wanted to take our love to the next level so instead of preforming a Ceveland Steamer I gave her a kooter."
"Sorry guys I can't eat Mexican food with yall tonight...I think I'm going to finally kooter Perry and I don't want the runs"
"Hey I clogged your toilet...Must have been the extra shit from when I got kootered last night."
The indefinable mystic system of justice that allows guys to get with girls way out of their league. Usually gained from faithful acts towards ungratefulgirlfriends.