CrayKay's definitions
When you fart and it goes up the front instead of the back leaving a warm feeling in your crotch, usually happens when sitting down and not lifting a cheek to release the fart.
Person 1 "Dude why are you moving around all funny"
Person 2 "just trying to fix my balls, I just gave myself a dirty heater"
Person 2 "just trying to fix my balls, I just gave myself a dirty heater"
by CrayKay November 27, 2012
Get the Dirty Heatermug.