grip-and-grin

plural grip-and-grins

1. colloquialAn event at which one is expected to smile and shake hands for a photograph.
2. colloquialA photograph of people looking towards the camera and smiling while they shake hands, typically taken at such an event.

   Banning the king from Cop27 looks clumsy. News that Sunak could make a U-turn dash to Egypt having learned that Johnson may go looks panicky. If he only stays for a brief grip-and-grin, that too will offend.

   2022 November 1, Polly Toynbee, “Rishi Sunak’s only been in office for a few days – and the errors are already piling up”, in The Guardian