forget wasps.
When I was six I pissed the forget out of a small colony and they dive-bombed me, turned into Usain Bolt and practically ripped through the door getting back inside.
More recently, I spotted Yellowjackets making six loving hives on the backyard porch, however I'd originally been notified of their presence by walking outside the back door to check something and had two land on my shoulder. Cue Usain Bolt 2.0, ran for the other side of the backyard and eventually got out.
To this day I /still/ hate the stuff outta em.
On a slightly unrelated note, they eat spiders(or feed them to their young, forgot which).
Poll