Dirty Mcquilkin
When you insert both thumbs into a rectum, gently widen it and take a big dirty sniff.
"Bro, I met this chick the other night and gave her the Dirtiest Mcquilken"
"I think he just gave me a Dirty Mcquilkin, but im not too sure"
"I think he just gave me a Dirty Mcquilkin, but im not too sure"