Jerks

Today one of the people I work with (lets call him Jerk to make it easier) tried to be funny and said I had std. I don't, I never have nor have I ever given them a reason to think I would. As to why he would say that I don't know.  It was rude, insensitive, uncalled for and absolutely no reason for it.  I was so mad I was shacking.  another one knew I was upset and tried to lighted the mood with a joke.  Jerk said I "Would kick his ass" if he didn't watch it.  I left the room and almost walked out on my job.  We have a high stress job, out of 9 people I am the only female.  As I said I ignore a lot of what I see around there because it is just a form of stress relief for them.  (We are a tech department for a small company)  Jerk got a food friend of mine fired and now has his job.  How did he do that?  Well he told HR my friend was harassing people and made everyone feel uncomfortable to work here.  Look in a mirror jerk!  He has set up people in our department before and has sucked, stabbed and belittled his way to the top.  Personally I like it where I am but not where he is.  Gah what a jerkwad.