Example:
I seriously hate techno dance parties... I think I'll up-play how tired I am from work.

Example:
Friend 1: "Who up playing with they worm?"
Freind 2: "You already know B)"

Example:
friend 1: who up playing with they worm?

friend 2: me🙋 ♀️

Example:
1.AWW my cars playing up it won't start!

2.See that guy Bob...He's playing up on his wife...

Example:
Bro stop playing up, i cant help it been on the piss alday

Example:
Nike is trying to play up their greedy image in a new advertising campaign

Example:
When 10-year-old plays baseball in a league for 12-year-olds he is playing up.

Example:
The mentor sure does have a big ego, I think ill play up to it.

Example:
The guy knew that the teacher's spy/teacher's pet was trying to play up to him even though the teacher's pet was not his pet or darling, so really it wasnt a good job of playing up, but he/she still thought that he/she was playing up to him and that he was going for it or falling for it for some reason. He also knew the teacher's pet well, so he didnt have to measure anything, since people dont change. Just like the walls on a building can warp and the measurements of the wall can change some, but the building is the same overall building it always was since it was built, even if their are additions, renovations, or parts missing, the overall building is the same building until it collapses or gets demolished, people also can seem different, seem to change form, but really they're the same overall people they were as kids. If they were a poser as a kid, they're still posing as something different all the time, appearing to change. People who think that everything needs to be measured to know anything about it, or to know it well are missing the point.