What's the worst "nest" you've found in an A-body?

When a buddy and I flew out to Oklahoma and drove an RV back to Arizona it was infested with a shitload of those huge red wasps they have out there.
One example is that we were getting pretty bad gas mileage and once we got back with it I did a complete tune up on it.
In the air filter housing snorkel was a mud ball wasp nest about the size of a tennis ball.
The OK people know what I'm talking about.
There must have been 50 nests in this thing everywhere from the engine compartment to the generator box
I'm not really afraid of bees or wasps in general, but these guys looked like they would leave something resembling a stab wound if they stung you.:D