The term "chow fucking down" is an idiom expressing enthusiasm over the outcome of a past event, indicating the speaker was successful in his endeavors by analogizing to the successful or enjoyable performance of cunnilingus.
"Dude, when my girlfriend fell asleep and my girlfriend's mother came into the living room naked and offered to fuck me, what do you think I did? Chow fucking down!"
by MILF Lover 75 January 16, 2014