An exclamation used typically in two situations:
1. After a
tremendous diss. Might replace the word "BURNEDD!!"
2. Immediately following a very
impressive or incredible event
guy: hey baby, you wanna get together?
girl: fuck off you
sleaze
guy's friend: BONESAWWWWW!!!! (right in guy's face)
*person does a standing backflip*
observer:
BONESAW!!! That was the
shiznite!