Noun form: an alpha action or something good, often relating to lifting. Sometime can be used to mean an attractive woman.

Verb form: to work out

Interjection: something yelled out to show happiness, demonstrate approval, or express excitement
Noun: Ah man you found 20 bucks on the ground!? That’s a major tset!

Noun: Ah dude you see that chick over there? She’s a tset.

Noun: Hey bro you wanna tset? I’m hitting back and biceps today.
by Tset February 16, 2019