Insults:

If brains were dynamite, you would not have enough to blow your nose.
I'm busy now. Can I ignore you some other time?
I'm looking forward to the pleasure of your company since I haven't had it yet.
I've had many cases of love that were just infatuation, but this hate I feel for you is the real thing.
All day I thought of you...I was at the zoo.
I wish your charm could be bottled--then a cork could be put in it.
I would ask you how old you are, but I know you can't count that high.
I would love to beat you up, but I have a problem with cruelty to dumb animals.
People say that you are the perfect idiot. I say that you are not perfect, but you are doing alright.
I may be fat but you are ugly, and I can lose weight.