What are some popular words used in pop culture now?

il y a 6 ans

American or Canadian:

Finesse
Adulting
Squad
Gucci
Lit
Thank you. Next. 
Goat
salty 


British

Lit
Mug
Bants 
Cheeky
Chuffed
knackered
Cuppa
Mate
Gutted
Arsed


      These are a few examples native speakers from a few country use. Do you know more and what they mean?