Anything you want. It's just one of those words that you can use for anything...a bit like 'Hakuna Matata' from the Lion King.(Pronounced 'Yacker-ba-cackers')
Me: "hahahahahahaahahahahahahahahahah your gayyyyyyyyyyyyyyyyyyyyyyyy"
Friend: "I hate you! Just Yamacasad!"
Me: "lol. You're even more gayyyyyyyyyyyyyyyyyyyyy than I though!!!!!!!!!!!!!!!!!!!!!!!"
End
The word you yell or scream normally before breaking some one's nose. Yavacado can be yelled before any act of violence, the options are limitles.
Steve: " I don't remember what happened. I just heard yavacado and everything went black."
Rob: " dude some guy yelled that and hit you with a 2x4 ! "
Steve: " shit where are the cops?"
Rob: " I was laughing so hard I forgot to call them. "