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1.
A public appearance by a politician or other celebrity in which the celebrity shakes hands or talks briefly with members of the public, preferably while being photographed doing so.
Oh, well, another city on the campaign trail, another grip-n-grin.
by Claremonitor July 20, 2009
 
2.
1. a solid handshake complemented with a grill.
Paul hit Chuck D with a grip-n-grin.
by hail2um May 19, 2006