PreHeated Oven 

Having your woman eat lots of hot or spicy food with the intentions of anal intercourse later in the evening. A woman can tell when she is prepped and ready by the warmth of her flatulence instead of the odor.

Dave noticed Sally force down two ghost peppers, he was excited to feel the warmth of her PreHeated Oven later tonight.

PreHeated Oven by BraHn September 1, 2013

Preheated oven 

When you fart into a blanket and then give it to someone while the smell is still in it.

My wife kept trying to take the blanket from me on the couch so I gave her a preheated oven.

Preheated oven by Nemes1sr230 December 6, 2016

Preheat the oven 

When a person applies warming lube in the vagina or anus

I was going to preheat the oven but remembered it causes severe pain and anal burns.

Oh no! I preheated the oven, get it out!

Preheat the oven by Big bangs September 7, 2010

preheat the oven 

An alternate term for going down on a girl. Most commonly used when talking to others in a public place.

Duder 1: "I can't believe you took that fat girl home last night? Did you preheat the oven?"

Duder 2: "Oh you know it dude. It was sweet like honey."

Duder 1: "Wow man that's so dope."

preheat the oven by westfalia December 11, 2009

preheat the oven 

to perform sexual acts before having sexual intercourse.
i.e. handjobs, blowjobs.

"Ay man- Do you know if Naomi preheat the oven?"
"Yeah, thats what i've heard."

preheat the oven by Preheatinthatoven July 1, 2008