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1.
Used to end a conversation by implying that you will continue the conversation later, likely via Black Berry Pin Messaging (BBM).

Can be used either dismissively, instead of "“I Know, I know”, or as a farewell, as in talk to you later.
Girl: "Crap, I'm late for my woman's studies course"
Boy: "Alright, pin yas"

Fraternity Master: “Are the pledges going to be ready for their exam?”
Pledge Master: “Yeah. Don’t worry about it. Pin yas pin yas.”
by AEPI Jedi April 29, 2010
 
2.
you know pinya!
When someone ask you what pinya means they alrdy know.
by J March 17, 2004