tongue chow is just another way of saying 'eating pussy'.
Janny is Chinese. I'd like to have some of her tongue chow.
When your girlfriend drinks red wine, gets a purple tongue, and starts being a bitch who's drunk and sharp with the tongue. Seemingly unprovoked by dialogue this often involves massive critiques of character, physique and intellect. Usually happens to angry drunks or girls that get drunk and whine. (pun intended)
" I was out to dinner with Shanquita and we were having a good time drinking a nice bottle of Merlot. Next thing i know, she gets Chow Tongue and starts bitching at me for the dishes i forgot to do last week. Then she went on about how im in too good of shape and i make her feel self conscious. What a drunk bitch."