eatathon

plural eatathons

1. A charity event in which participants eat as much as possible.
2. slangA large feast or pigout.

   So I gave myself a week's reprieve and started another eatathon.

   1982, Barbara Zara, Erin McHugh, I left my fat behind, page 14

   2 more examples

   Our recommendation is to tote the excess home in a doggie bag so you can indulge in the dessert, the Queen of Sheba, an eatathon consisting of a rich chocolate base, mounds of whipped cream, and a guilt complex.

   1983 March, Texas Monthly, volume 11, number 3, page 49

   Typically, Americans eat a very substantial portion of the day's calories at the evening meal, and then continue an evening "eatathon" in front of the tube.

   1992, Sue Gebo, What's left to eat?, page 151