Preevning 

A part of day time between afternoon and evening. Made up by Sheldon Cooper in Big Bang Theory.

Howard: Your date is tomorrow afternoon 4:30.
Sheldon Cooper: That's not afternoon. That's preevning

What?

It's a time of day I invented. It better defines
the ambiguous period between afternoon and evening:
preevning.

Preevning by mahHD May 25, 2010

preeing 

Watching/ checking out someone on social networks e.g twitter, facebook, instragram etc
You can even preing in real life

That girl has been preeing you since you walked in

preeing by Queen sheba September 12, 2013

prevening

Time of day that defines the ambiguous time between afternoon and evening.

'What are you doing tomorrow prevening?'
'Tomorrow is Saturday so I will be spending the prevening presorting and presoaking."

prevening by Scheb Nheel May 26, 2010

Preening 

Mostly associated with females however also seen in males, preening is the act of trying to make oneself more attractive to a potential mate or person of the opposite sex.

A common preening technique is straightening of clothing or flicking of ones hair.
More showy forms of preening would include metaphorically wiping dust off ones shoulders showing they are smooth commonly seen in some men trying to impress.

Dianne saw an attractive guy sitting on the park bench

Guy looks up at her
Dianne instant ly reacted by preening herself, flicking her hair before walking past the guy

Preening by Mudekdek October 2, 2017

Peening 

The act of rubbing ones clothed male genitals on the person of someone else without their knowledge.

Ew! That weird guy just came up and peened my leg while I was dancing!

Ugh, peening is so gross.

Peening by Al and the Lu man August 22, 2011

Preventing Spontaneous Human Combustion

To let one rip
First coined on the hit show:south park

ex:

Man:Dude that was sick it smells like eggs...
Dude:Hey man just preventing spontaneous human combustion here...

Preventing Spontaneous Human Combustion by Fucktarded Scarecrow August 1, 2009

Peening 

The act of coitus, aka fornication, aka fucking.

Mark is amazing. Last night I got a really good peening and now I can’t stop thinking about peen. God, I could get peened all day long!

Peening by jacks Owen June 30, 2018