Check Mate

When you are urinating in an empty washroom, and another man decides to use the urinal directly next to you instead of choosing literally any other urinal to pee in. After which, scoping your penis with a quick glance.

"Dude I swear to god you could of chosen any other urinal, but instead you check mate me..."

bussin checks

Bieber: Aye bro, I was bussin Selena's checks so bad last night that I gave her a creampie.

Basically having sex

Bussin checks means to be riding her pus*y really good

Serve ball check

When, before participating in a threesome, you have to discard a few people so it doesn't turn into an orgy. You have a quick look at them and select the fittest.

- So, did you fuck all of them?
- Nah, I serve ball checked them quick and tossed the ones who were still unnaked

Checks Out

Meaning that something is indeed correct

“Ok Fairs, yea that checks out”