I don't know what to do about my moms boy friend?

You dont need to convince that s**t head who is ur mums boyfriend....your mum is the one to warn him about it and make him stop..he is not even ur father.But guess ur mum cares more about the boyfriend if she isnt telling him to stop. Also be careful about all the guy friends...girls usually have drama...so do u. It's ok to keep both guy and girl friends but be careful with the oposite ...I have a friend who was d by her suposed guy friends. Talk to ur mum to make that guy stop verbally abusing u.