1. Mimicking the girl’s voice anytime she dares speak in game.
2. Griefing his girl teammate.
3. Calls her a dumb bitch (or any other derogatory term) in order to take her down a notch.
4. Asks to see her boobs. This is his way of reminding her she is only boobs and her sole purpose is to provide men with boobs, also he is dumb enough to believe she'll show him her boobs.
Anit-Gamergirl: (in put-on shrill tone of voice) I dumb girl me girl dumb face!
Anti-Gamergirl: Show me yo boobies BIIIIIAAATCH!