I haven't found this in academia as much as in bureaucratic office culture. At one bank where I once had the displeasure of working, one woman manager liked to make disparaging remarks about the physiques of her male subordinates. She was an acquaintance of a well-known action star and used him as the basis for her invidious comparisons. I thought this treatment was completely unnecessary.

Joking about men being idiots is sexist (or misandrist), but I'm beginning to wonder whether the unfairness consists in excluding one half of the population of the working environments in which this assessment is commonly made. OK just kidding, "lighten up." (I hate that phrase.)