Prize pig

From OAPedia.com

Prize pig, AKA contest pig, is a term used by Opie and Anthony to describe a person who calls into radio shows during contests in order to win prizes, who otherwise isn't a fan of the show and has no interest in listening to the show outside of the contest. A good example of this is when O&A held their Win $1000 a Day with O&A giveaway, during which a number of people called in to win the $1000 claiming to be fans of the show. O&A tried to get them to name their favorite O&A bits, but they couldn't do so.

Opie has also mistakenly used the term "concert pigs" when describing these people.