When I was a fish camp counselor we had a contest with another camp to see who could eat the most CiCi's. I ate 23 slices. Two guys were in the 40's. 41 and 43 IIRC.
I did once eat 13 McDonald's cheeseburgers in high school. A football team challenge. I won beating out a guy who was at one time the SECs all time leader in sacks.
I think my record is 23. My roommate and I had a contest in college and I think he threw into towel at 19 when I lpoked poised to hot the quarter century mark.
The bus stopped by a CiCi's after a basketball game once so we had a contest. 28 was the winner. I had around 13 if I remember right. It's the only time I ever tried to eat a lot