a person who plays the role of an assistant or subordinate or who otherwise supports others, often in some unpleasant task or line of work;
e.g. The gangster's stooge was sent to collect the ransom money.
(noun)
a person whose performance involves them being the subject of a comedian's jokes, often by setting up the opportunity for the comedian to deliver the joke;
e.g. She poked fun at the way the stooge was dancing.
(verb)
to serve as the subject of a comedian's jokes, often by delivering the set-up for the joke;
e.g. He was asked to stooge as a supporting character in the comedy movie.