Doninnit 

1. To exclaim of one's personal interest in any comment made.
2. To explain that an activity has been completed and await confirmation in the form of appraisal.

"I kicked his sorry butt, doninnit!"
"We should make a crew called Dem Lot, doninnit!"

Doninnit by RENEGATUS DOT COM October 9, 2003

Doninnit 

Verifying that you understand a statement that has been made.

Don #1: Trust me blood, there's a don in the place right now, blood!
Don #2: Doninnit!

Doninnit by Stonka October 18, 2003