My male colleagues always laugh at me.

If a man always makes fun of you, I personally think he doesn't mean to hate you. A man always makes fun of you. He tried to get your attention. Getting your attention is actually his purpose. I think he actually has a crush on you and likes you, so he wants to use various methods. If you want to get your attention, one of his methods is to make fun of you. If he often makes fun of you, then you will pay more attention to him. Why do you think you keep him joking? I think he actually likes you rather than hates you.