human buckaroo
In the science lab, there are plenty of artefacts to put into the fattest boys bag. (This isn't anti-fat, but common sense. People who weigh 29 stone are less likely to notice a few bunsen burners in their bag) If done in the last period, there is every chance he will take them home with him. Hopefully, we will empty his bag in front of his mum. When she sees all the cut up and gutless frogs, she will assume that he stopped at a pond on the way home, and feasted on the wildlife.
written by Jo* Blyt*, Gr*ham*Pow*ll, approved by Log

Dunno if this really counts as it didn't happen in school but a friend and I did a similar thing at a works christmas meal using cutlery, condiments and several old men.
I am 24 and my friend is 32 and a Senior Manager for a very large electrical retail company.
Yes, I was bullied at school.
written by Ga*ret* A*erman, approved by Susan