You use yeet when you throw something or when you wanna throw someone, mostly used in 2018-2019, now if you use it you are considered a weirdo
Alex (throws Becky's phone) YEET!
Becky - I will yeet you in a trashcan!!! >:(
That moment when you wanna laugh at something that's awkward or just want to "yeet" someone
person 1-Oh god can't that guy shut up?
person 2-Ikr imma yeet him out the window
or
person 1 - *says bad joke*
person 2 - Yeet!