A grip of old people
A group of old people who stick together like a bad smell. They all talk at once and no one listens.
There's a grip of old people in the lobby, and they're all arguing about whose turn it was to mow the lawn.
A grip of old people showed up at the restaurant and ordered 10 different meals just to see what happens.
I saw a grip of old people fighting over the last seat on the bus like it was the last seat on Earth.