Most friendly 'hello' in the world. Synonyms vary. It looks like a slang but literally a common saying between
friends/best
friends/LOVER.
However, BE CAREFUL, it can be a cat on keyboard or (of course more than serial murderers) even
YOUR MOM.
Me: *onlines, preparing tools in XboX*
Mom: *also onlines* hiiiiiiiiiiii!!! MOM IS HEREEE!!
Me: *confusedly screaming* AHH WHAT THE F#$%ING DUCKY MOM WHAT ARE YOU DOING HERE IT'S 12 AM *panics* I-IT-IT'S- MIDNIGHT?!!
Mom: ohh sweetie
don't swear like that AM HOLDING A HOE IN FRONT YOUR ROOM DOOR!! HAVE YOU DONE YOUR
HOMEWORK?!! THE REVISIONS FOR YOUR TEST?!! DOOMSDAY WHEN I HEARD YOU
DON'T SCORE A+!!!