Pre-Cheating 

The act of purposely flirting with someone even though you are currently in a relationship.

Sara: "Did you hear that Kati was totally flirting with that foreign guy on the European field trip?"
Danae:"Wait isn't she dating Chris?:
Sara:"Yes, she is totally pre-cheating!"

Pre-Cheating by Vance Freeman December 24, 2010

Preheating the Oven 

A mental state of anticipation, specifically which occurs after one has consumed a marijuana edible, and before feeling baked.

“Are you fucking high??” “Umm, no. No, I’m just preheating the oven, dude. I only had that edible 20 minutes ago.” “Well then you’re just dumb. Also, nice Phrase, thou hast.”

Preheating the Oven by ScroopieNoopers May 28, 2020

PerCheating 

A non-existent word thrown around recklessly by the weak on World 28, 'Lords of Ultima' to mock the leading Alliance, 'Perfection'.

In lieu of playing fairly some have devolved to attacking the uncountable successes made by the Alliance 'Perfection' as acts of cheating.

AlphaDogs: "Ohnos, we lost another castle to Perfection today! Perfection must be "PerCheating!"

Meanwhile. . .

Perfection: (silence) - because being, "Classy is saying a lot without words."

PerCheating by ExperimentalKernel September 23, 2011

preheating

A term to describe the shluts in waiting. Any female you're working on.

John: Hey man, so you and Jen broke up. You got any new prospects?

Albert: You know me man, I've always got some buns preheating in the oven.

preheating by trickdick July 3, 2005

precheating 

Studying material before an exam.

Alright class, time to stop precheating. Put your notebooks away, I'm passing out the quiz now.

precheating by Tells-Many-Truths September 20, 2020