To Check and see if a Vagina is moist
I need to give that smoking hottie over there a moister check
Storing (usually illicit) items inside your rectal cavity in order to get them through airport security.
Dude, how are you gonna get that blow through security?
Don't worry, I'll keester check it.
The most amazing girlfriend you could ever ask for. She's loyal and trustworthy. Nobody likes her friends cause there annoying but that doesn't mean you cant like her
IDK, Arianna Check
The act of checking someone's side of the screen in a game, most notably first person shooters such as COD. It is also considered an act of total doucheness for you gain an advantage of the players location.
Me: Dude, WTF?
Friend: Whaaaaat???
Me:Stop screen checking, you keep beating me!
When you're uncertain about a fart that just happened, and you need to go make sure it wasn't something more serious.
Be right back! Gotta go do a price check on aisle two, if you catch my drift!
Sec Check - or Security Check. The act of researching someone through their social media profiles in order to know if they are legit/worth meeting/not a serial killer before meeting them first time (e.g. finding a tinder date's Facebook page).
I sec checked that hottie on tinder. Turns out he has two kids and works at wall-mart.