A nonsence word (which is used in many different forms) to convey that the person writing has to say something but cant form words right now. It is created by banging your hands on the keys randomly and can be as long or short as you feel necessary.
It is usually used when something is too hot/cute/exciting, etc for words. Mainly used when possitive emotions are present.
Person 1: LOOK AT THIS TOPLESS PICTURE OF JOHNNY DEPP!
Person 2: juayhefvblahbv adjvhbdlvdsfbidvbkd!!!! *drool*
Person 1: AHH I CANT WAIT FOR TOMORROW!!
Person 2: ME EITHER! DBKSALJBSADJVNJKVD!