Wasp and bee stings.

Like it says in the hangover thread, Prevention is the best way to deal with them. It's a little known fact that if you talk nicely to a wasp or a bee it is less likely to sting you.
If you have a wasp in your house, just talk nicely and calmly to it and offer it a little treat, say a dab of jam or honey (or even water) on your finger (or on a knife if you're too scared to use your finger) and often she will come down and eat out of your hand. Then you just walk outside and put her down, or shake her off.

Bert.