You see this every day, but you certainly don't see THIS every day.
Fan hooliganism is nothing different, especially in soccer. But having one leg gets you privileges in certain areas, running onto soccer fields unnoticed most certainly being on of them. Watch this dude hop right onto the pitch during the first half of the Corinthians-Coritiba match, before being taken down by the clearly competent security team.
[H/T: CosbySweaters]