Trivia: It took three hours to apply Eddie Murphy's make-up every day for the entire 70-day shoot.
Trivia: The comedian who makes fun of Sherman is none other than Comedy Central's now famous Dave Chappelle.
Trivia: In the scenes with Eddie Murphy and Dave Chappelle, much of their dialogue was ad-libbed.
Answer: Sherman is having a binge-eating episode due to being sad and embarrassed about what happened. Often, when people have unhealthy relationships with certain substances (whether it be food, alcohol, drugs, etc.), they will rely on those substances to feel better when they're down, and may go on binges where they consume large portions of them. Especially if something bad has happened to them. I myself have struggled with multiple addiction issues in the past, and I've done exactly the same with food, alcohol and drugs. (Eating an entire pizza, downing an entire bottle of rum in a short span of time, etc. when I was feeling down.) It may not seem logical... Because it's not. You just want the bad feelings to go away, so you binge the things that make you feel better. That's exactly what Sherman is doing after being insulted by Reggie... Notice how over-the-top his eating is. He's literally pouring candy into his mouth and eating ice cream in a sloppy way. It's played for comedy, but it's actually not unrealistic at all.
TedStixon