New Windex ad:
You should get Windex for that dirty mind!
New Windex ad:
You should get Windex for that dirty mind!
Listen up, buttercup. The joke is all about a "dirty mind," see? Implying someone has naughty thoughts. Windex, which is normally used to clean glass, is suggested here as a way to clean those thoughts. It's funny 'cause it ain't literal, dingus! I bet you use windex to clean your teeth because you are not smart.