It is also used while criticizing people / things..
e.g. "YAAAAAAAAAAAEYYYYYY thara idhe!"
It has been mistaken many a time, to be a scream of joy i.e. when I put YAAAAAEEYYY as a status message, I get all kindsa pings like "someone's very happy today ;)" / "en ri? full khushi aagidhira?" etc etc...which makes me go all the more - YAAAAAAEYYYYYYYYYYYYYYY!!!!!!!! x-(
Mondays and Tuesdays, for me, are the WORST days of the week!
I feel so YAAAAAAAAAAEYYYYYYYY right now! x-(