Letting your employer know you've quit by sneakily writing "I QUIT" across their significant other's buttcheeks

An extremely useless portion of your body unless you have a hottie who could sit on there comfortably and you could make some lovely memories, Yes, I'm talking about your thighs, your manly lap. The idea behind calling it "Upside Cheeks" is - Your but are cheeks which are down while you're sitting or laying down therefore, Your thighs/lap which is opposite to your downwards cheeks should be called as Upside Cheeks.

The joke

Hey duude listen
what
the sound of your ass cheeks being clapped

1. An ass that is so small it can be considered as just as part of the taint

2. Synomym for douchebag

3. A tool used for collecting plantains

The act of beating someone in a physical activity, usually by a large margin.

Dying due to some bullshit from the other team or the game itself