Help with CS phrases!

[derpcloud]

Hi! I’m a new player and have been seeing a lot of chicken smoothie lingo that I’m a bit confused about haha. I was wondering if anyone could tell me what these words and phrases mean:
COPPA
Paperclip trade
UR pets

[Rox_ Show]

COPPA is a CS user under 13(?) who cannot use chat forums - like this one - or send PMS, trade messages, etc ^^

Paperclip is a 1:1 trade where someone trades a worse pet for a better pet, like a common for an older common or something. They do that for as long as they can with one pet

UR pets are pets that are ONLY released on december 18th, a special event that puts old and rare or better pets back into circulation by re-releasing them. UR pets cant be gotten any other way and are extremely valuable

[derpcloud]

Thank you so much!!!!! C: