I was astounded that people do that TBH. My daughter told me that several gigs she's been to (Arctic Monkeys, Kings of Leon and Oasis) that it's commonplace! A friend of my daughters (a really lovely inoffensive girl) was at a gig at the weekend - she told my daughter that the weather was OK but she kept her raincoat on beacause of the cups of piss flying about. This girl looked down and saw that the guy next to her was pissing on her shoes ..............she had a bit of a go at him (as you would) and his girlfriend promptly proceeded to punch her in the face. She is now sporting a black eye.
I know I'm an old fart but ....................what is the world coming to? I really don't get it at all.
Anyone else had experience of this?