Pigs do not sweat. So if you hear someone saying "I'm sweating like a pig" you should inform them, politely of course, that they are speaking hogwash as pigs have no sweat glands. They tolerate heat poorly and need water or mud to help them thermoregulate. Poor critters can't even pant like dogs. To help them out in the recent heat wave, we flood the area by the water pans and then for fun we take it a step further and hose them down.
The sign ?