Hotter than two rats fucking in a wool sock

A colorful colloquialism of the American South used to express an extremely uncomfortable degree of heat, usually one that can not be tolerated except for a short period of time, or one which is initially intense and then lessens as contact with it continues. Examples include:

• The vinyl back seat of a car that has been sitting in the Florida summer sun all afternoon
• The open front porch of any clapboard house in the Tennessee Valley around lunch time on a day in August
• The asphalt parking lot of any convenience store in East Texas at about 3:00PM on a sunny cloudless day in July
• a 100-watt lightbulb that has been on for at least an hour
• the wrought iron park benches in Jackson Square in Nawlins at 10:00AM on any day during most of the year
• an elevator full of people stuck between floors during a rolling blackout in California, after about 20 minutes
• three or more rats fucking in wool socks

The important thing to keep in mind when using or hearing this term is that it applies to things which are very, very hot, but not hot enough to really burn you or seriously impair you unless you get too much of it. Relative to other levels of heat, two rats fucking in a wool sock is hotter than a hooker in a church, but not hotter than hell's hinges.