Check out this link where you can see gender bias in student evals. Guess which professors are more likely to be called "funny" or "genius" on ratemyprofessor.com, and which are more likely to be called "bossy"?
Or test out your own terms here. Male professors are more likely to be called "best" and "smartest," and female professors are more likely to be called "mean" or "annoying."
But if you attribute these results to sexism, you're probably just an excessive feminist.