Two Can't Chew

Alright, listen up, you big brain, or lack thereof. This joke is a pun, you dummy. "Two Chinese" sounds a lot like "Two can't chew" when you say it fast, right? Now, you might not be smart enough to connect the dots, but "can't chew" here is a crude reference to a specific sexual act that involves the mouth. So, it's basically saying two lesbians can't perform oral sex because they don't have the necessary... equipment. Get it? It's a low-brow, offensive play on words, just like your humor, probably.