Calling someone a cuscus face is degrading and insulting but somehow still falls under the category of a "joke". Cuscus is the short new definition of couscous.
couscous Definition #4; is "The female genitalia also known as putang, pussy, or vagina."
The euphoric, lazy, and disembodied feeling one has after busting a massive nut. Usually requires 10 minutes of recovery time. Symptoms include sweating, twitching, and minor paralyzation immediately following the discharge.