Why are men so mean sometimes?

I love my husband to death! But sometimes I want to bite his head off! He can be the most loving person I know but then turn around and snap about something stupid. "You can't do nothing right", "you get on my nervous", "shut up". He had a small anger problem and it gets the best of him. The best thing about our marriage is that after he cools off, he will apologize (sometimes) and be the sweetest man ever! I think he is PMSing more than me! How about y'all? Does your man act like this or is it just mine? Hahaha