Continuing my survey of Judy Blume novels...
I actually read Blubber at the age of 12 or so but I don't remember much beyond the ending for some reason. I blocked out the obnoxious little brother or the subplot about vandalizing the mean man's mailbox. I remember the humiliations though. Strange what we remember.
This is of course a classic. Probably one of the better books about peer pressure and the sheer meanness that kids can express to each other. It struck home very hard when I was little since I had been in Blubber's place when I was a kid and struggled with the desire to be a tormentor instead of a tormentee.
Blume never really gives any advice for dealing with the problem and I know I was frustrated by that. To this day, I wonder if there wasn't a better way of dealing with teasing and being teased.