When you're under the covers and you let a rancid fart slip. It then festers and stays warm in the blankets until your partner lifts up the covers and is hit with a blast of stink.
(Much like lifting the lid off a crock pot and the hot blast of steam that comes out.)
I couldn't stop laughing when Mike lifted the covers and was hit with a crock pot fart
When one takes a monstrous repugnant shit and then without flushing immediately takes a scolding hot shower. The door and all the windows must be shut and the toilet seat must be up. If all these steps are taken then the feces will cook and fester resembling the effects of a crock pot.