Reply to "Why do people throw cups of piss at concerts?"

I went to Reading festival in the late 80's and they were throwing cartons and bottles of piss at Bonnie Tyler. At that time I had never heard anybody swear like she did. Then Meatloaf came on to the stage to defend her by threatening people with a baseball bat. A couple of hours later I got crushed in a crowd surge and had to be thrown unconscious over the security barrier. I never went to another festival.