In times gone by in sunny Scotland your down to earth kilt wearing scotch drinking battered mars bar munching Jocko would claim after a nice little drinky of "dooin tha bizzo".
Also it can be used for claiming somthing is done.
Bizzo is Glaswegian for buisness.
Scotland is older than America.
Bizzo is therefore Scotchish y' ken.
did y' see Scotch Harry last night drinking 3 bottles of Glenfidich ???????? aye he wah doin tha bizzo laddie tha's right.