I nearly got beaten up in the queue for Stealth at Thorpe Park last year!
To cut a long story short, there were a bunch of guys queue barging pretty much right to the front of the queue by jumping over the fence and then forcing their way through people.
English people being the nice folk they are, let these guys push through and don't say anything.
Then I step in as I've been patiently waiting in the queue for over an hour. I see the guys coming up behind me and I put both my arms out across the queue holding on to the fences on either side so they can't pass. What follows is a 15 minute argument, the guys shouting at me and abusing me right in my face, but me not budging. At this point, this mum with a handbag gets involved and helps me and eventually the whole queue is with me and the guys are forced out!
They threatened to beat me up and 'get' me after the ride, but I never saw them again!