when you're in a friends car as you leave, you fart then close the door really quick. The fart incubates so the next time the car is opened it smells like shit. Works best in summer
The act of placing your cold testicles into a womans warm vagina, and letting them toast to a desireable temperature. For the ultimate effect, a woman can queef the balls out of her snatch, giving the man the ultimate finish.
\\\"Yo I gave Catelyn the incubator last night. It was so warm in there.\\\"
The time period between thinking a song or album is so-so, and having it play non-stop on your itunes.
Hilton: Did you hear that leaked Angels and Airwaves cd?
Ian: Yea I did, what did you think of it?
Hilton: It's kind of meh.
Ian: True, but let's let it incubate.