There is a common saying that goes that dumb girls are more sexy. Stupid girl = attractive girl?
Well, not always, but in many cases that actually is true.
And there is now science behind it to prove it. Scientists use the term sexual exploitability hypothesis – basically meaning: the dumber a girl is, the more easily she can be sexually exploited. Dumb girls can be seduced easier. So it makes sense for a men to find dumb girls more attractive, because it enhances his chances of passing on his genes.