I have one example of being made fun of that still gets to me. This was an experience that I went through from 2000-2002 in a place I used to work.
This was a small business, with only ten employees, and one of the bullies happened to be the owner. She had her favorite employee who, in my opinion, is a disgusting person, inside and out. When he wasn't there she wasn't difficult to be around. Sometimes she could even be pleasant. The moment he was around though, she became just like him. I noticed it, as did some of the other employees. They were both very cruel and I once saw them high-five each other when one made a particularly insulting remark in my direction.
There were aspects of how she ran the business that I felt were unethical. One of which was not reporting all of cash flow. I talked to her about this and explained to her that if she were audited it would come back to haunt her, that her employees (including her little buddy) would simply leave and work for someone else. As the business owner it is her responsibility and she would stand the most to lose.
After that things became much worse. The hostility was as such as I always felt as though I was walking on eggshells and never knew what to expect. Even if they were in a good mood in the morning, it could change drastically by lunchtime. They had nothing positive to say to me or about me, and even said that I was a loser and that no woman would ever be attracted to me.
I had one friend there, and when she had finally had enough and quit, I was gone within 30 days. Although I felt a sense of relief, like a huge weight was listed off my shoulders, the events of what happened there still get to me. I guess to some extent that their hurtful remarks made me believe they were true.
About a year after I left, they had a huge falling out and she fired him. She sent me a friend request on Facebook a few years later. I'm still friends with her and her husband, but I rarely see them. I don't know what became of the other one at the workplace.