When a person wears a low cut shirt, tank top, bikini, etc. exposing one's neck & upper torso revealing their clavicles, often but not only, in a sensual way.
"Yo dude, Lindsay has some sweet clavage goin on."
the game of throwing small objects, such as little balls of paper, inside a girls shirt with the goal of getting it to go in between her boobs.
Bryan: Look at Jessica over there. I'm going to play cleavageball! I'm gonna throw this paper ball inside her shirt.
Barney: You are going to miss! She doesn't have anything!
Pajama casual is a term used when working from home and preparing for a video conference. All business above the waist and your pajama pants down below.
We have a Zoom meeting in a few minutes and I’ll probably go pajama casual.