Two things that scare me silly. Spiders and stinging insects that fly. I don't know if I would even be capable of holding still for a physician if I knew two of those buggers were crawling around inside my ear. Probably behave more like that alien in Babylon 5 who bashed his own head against a pipe to get 'something' out. Course, he died, so I guess that wouldn't be the best way to do it.