The action of exclamation. A modern day form of, "yahoo," "wee," or "Truly, this is a great hilarity." Used within the normie meme community and all the way through to the dankest end of that spectrum, being a vocabulary used for most memers.
"Dude, I finally got laid."
"Yayeet, no way."
"I can't wait to get home to chug this poisoned bottle of liquor, yayeet!"
"I hate myself."
"Yayeet, me, too."
