What are the legal consequences for a person slipping someone else a laxative into a drink?

Wednesday, June 24th, 2009

Mike C asked: If one person gave another person a laxative without their knowledge, what sort of legal consequences could the offender be facing, assuming the victim could prove it in court?
What would the charges be?
In this particular situation, it was a prank among teenagers and could be proven by 6-8 eye witnesses.