Unless it goes down as Edwin suggests (pun intended I’d have to go with the Tribble. Worf is just so ineffectual. We frequently play our TNG dvds, and would develop alcohol poisoning right quick if we made a drinking game of Worf’s utter ineptitude. He never takes the initiative, stands there dumbly while people get shot/kidnapped right in front of him, is always too late to actually protect anyone he’s supposed to, suggests nothing that’s actually going to work, and overreacts to an insane degree (it was awful, but we couldn’t stop laughing when his response to Troi’s accelerated pregnancy was to abort it - but we soon had to switch to mocking her, for knowing the kid is going to grow up in approx. 4 hours, sticking him in the ship’s day care, and then whining later about not having enough time with him).
But then most everyone on TNG is terrible at their job, so maybe I shouldn’t discount him so easily :shrug: