Used colloquially to represent the idea of having many things to do; it is used in the place of "shit to do" rather you have "hizz to bizz." Orgins of this phrase stem from the phrase "Hoes to Bang" thus became "Hizz to Bizz."
Jerry: Dan do you want to go do something or get something to eat?
Dan: Sorry dude I've got hizz to bizz.
Dan: Sorry dude I've got hizz to bizz.
by Dee Max August 23, 2006