Quietfish quotes my answer to her AskMe about the proper way to destroy an All-You-Can-Eat buffet.
"First off, be hungry. Don't eat earlier in the day, or if you do, eat only small things.
Second off, make sure you've got the capacity. I find that emptying my bowels prior helps the experience.
Third, I like to get a massive high on before hand. I feel that it stimulates the appetite.
Fourth, the bread is your enemy. It is there to fill you up. Ignore it. You don't want to look back on your death bed and think "I could have eaten more, if not for that bread."
Fifth, pace yourself. Gorging quickly can give you a cramp.
Sixth, water is also an empty gesture. Try to avoid drinking too much.
Seventh, try to recruit your skinny, high friends. The fat ones will have stomachs compressed. The skinny ones will challenge you to eat more. You must best their gullets!
Eighth, beware of spices. The Indians whose buffet I frequent viciously increase the level of heat to discourage gluttony. A little bit of milk or cream or fat will cut the heat (a lassi). You'll pay the next day, but that's the future, and the buffet is now.
Ninth, if you're eating so fast as to have to belch, slow down. The goal is to keep eating even after you're full, but not to get extra air down there.
Tenth, you can often snag a take-out container, which is like having an extra stomach without having cud. I.e. awesome."