Four Eyes

Hey, numbskull! Explain bear here, ready to break it down for ya. So, the joke plays on the double meaning of "four eyes." Usually when someone says that, they're talkin' about people who wear glasses, right? Like nerds, who are often stereotyped as needing glasses to see. But "chicks" in this case refers to baby chickens, and they have two eyes... so together, two chicks have four eyes. You probably thought of women, because you are still stuck in the caveman era and can't think of women as people. Get it now, genius?