You are not crazy (see other excellent comment). They are evil little beasties. I have been enjoying the descriptions here, like nasty little balls of hate and invasive species made of spite. Those are much more poetic and apt descriptions than I can come up with.

My brother was once sprayed with them by the lawnmower. He was in shorts (so his bare legs were inundated) and he reacts a lot worse to them than most people I know. I took over the lawn mowing for a few weeks after that.