yukking it up

Yukking it up means laughing boisterously or joking around with others in an exuberant, uninhibited way.

The phrase suggests loud, hearty laughter—the kind that might annoy nearby strangers.

The guys were yukking it up in the back of the room during the whole presentation.

It often implies that the merriment is excessive or poorly timed, though it can simply describe people having a good time together.