A dirty Cylee is when a guy is trying to fuck a girl and his dick won't get hard, cuz her pussy smells like 5 day old, rotten, boiled chicken water and instead of ending up with blue balls, he plugs his nose with some old ear plugs, and without her knowing, slyly pulls out his dick and starts fuckin her instead with a bottle of freeze(nozzle first) so that when it hits her cervix it sprays so that he can "breathe happy."
"bro, the other night I took some bitch home with me from deep down in the swamps, and her pussy smelt so bad, I had to pull a dirty Cylee on her crusty stank ass!"