I didn't feel that I was "made fun of" - if anything I felt that I was invisible most of the time and even being made fun of would have been preferable - but I was criticised now and then for:
Not being fashionably dressed, especially not having skinny enough jeans (in the late 70s/early 80s when "drainpipes" were the thing)
Not wearing make-up until I was about 16
Having a Southern accent in a Midlands school
Having a cagoule that allegedly looked like a condom
Because there was a rumour that I had hit someone with a violin (I hadn't)
Not going out much (by people who didn't invite me anywhere)