A peanut gallery is an audience which heckles the performer. The term originated in the days of vaudeville as a nickname for the cheapest (and therefore rowdiest) seats in the theater; the cheapest snack served at the theater would often be peanuts, which the patrons would sometimes throw at the performers on stage to signify their disapproval.

yes, basically it's a remark;
The peanut gallery is where the cheap seats used to be at a show.


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