peak check 

A peak check is when a player checks another players profile to see what their highest ever rank was

This can then be used as a trump card in any argument given that your peak is higher than the other players

Person one losing and argument:"You think you are better than me? Peak check"

Person two having no way to recover as getting humiliated by a peak check is a fate worse than death that means a lot to everyone in the conversation: ...

peak check by Overwatch University August 17, 2023

cheek peak 

When a girl is wearing really short shorts and just an inch or so of ass cheek peaks out the bottom of her shorts in between strides.

Me: Hey Bob Dobalina, check out the cheek peak on that girl to your left.

Bobby D: Now that's a fashion statement I can get behind, if you know what I mean!!!!!

cheek peak by Areye Sique April 24, 2014

Cheek peak 

The slither of arse cheek peaking underneath when someone wears very high cut shorts or hot pants

Obi likes to wear hot pants to maximise his cheek peak

Cheek peak by Pygmy Hunter June 30, 2018