grandfather / old man / grandparents / a player whose hand is shown and is to be played from by another player, dummy

(idiomatic, derogatory) fossil; old person in a position of authority stubbornly sticking to anachronistic views, no longer competent for their job and not willing to step down to make way for the younger generation

nutcracker (implement for cracking nuts)

(idiomatic, humorous) stereotypical embellished sales pitch