The state in which an oven is being or has been preheated in order to cook munchies.
Preheation is almost complete, then 10 to 12 minutes to cook before enjoying delicious pizza rolls.
by DeMullet January 07, 2011
when a guy gets super horny and the whole room starts to heat up before he jacks off
dude its so hot in here could it be preheation?
by ardnas99999999999999 August 15, 2011

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