Fatty, Fatty, Two by Four. All are time-honored names for the fat kid in class.
Kids are cruel, and being teased is considered by many a normal part of growing up.
Especially if you're the fat kid. Of all the ways for a kid to be different, being fat is probably the worst. It's no longer acceptable in polite society to taunt someone about his or her race, sex, religion, mental or physical handicap or sexual orientation. But being fat is practically a legitimate target. In our weight-obsessed culture, most people's lists of politically incorrect behavior don't include making the fat the butt of our jokes.