Girls, when is it fair game to use small dick insults?

A female friend of mine exposed his ex as the "4 inch guy", since he was so full of himself and making sexual jokes about girls. That guy's big ego quickly dissapeared as all her friends started calling him "Mr. Overcompensation". I felt like I just witnessed the scary side of women. Is this okay, or did the guy deserve better?
Girls, when is it fair game to use small dick insults?
Girls, when is it fair game to use small dick insults?
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