I was banned from an amusement park because, many years ago. They sold drinks, in cups, that were shaped like bongs. My friend and I were sitting in a small pavilion area, that was in a rather remote corner of the park. We were smoking cigarettes, which was fine where we were, and my friend and I were talking about turning the cup into a bong. At one point he stuck his face on the opening like you would a bong. Some people, in the next pavilion over, were staring at us, then left. We were punk kids, like the music, so we were kinda used to random people staring at us, and we thought nothing of it.
About 20 minutes pass and a cop walks up to us. He asks us to turn over our paraphernalia, and leave the park, and he wont arrest us. We give him a WTF look, and say what paraphernalia? He says people reported seeing us smoking from a large, purple, water pipe. Friend says "you mean like this?" and holds up the cup. He looks at it for a good 10 seconds, and then says yeah that looks like a bong, I can see why they may have thought that. He then told us about how he was a punk, pulled up his sleeves to reveal GBH, and Casualties, tattoos. We commented on how he isn't a punk, now that he is a cop, those things are mutually exclusive. Short conversation on punk ethics ensues. He then says sorry for bothering us, and walks away. About 10 minutes later we are walking back into the main area of the park when we see punk cop walking with a man and starts flagging us down. The man is the park manager, and even though the cop straight up said it was a cup THEY SOLD, he wanted us kicked out, and trespassed. Cop asked us if we were going to leave now that we are asked, and we said yes, and left. However he stopped us at the gate demanding the cop get our IDs to put on file, cop tells him we left when asked, he can't actually write us up as a trespass if we leave upon request, unless we come back. So we started walking back to our car, and as we are getting up to it, the manager runs, literally runs, up to us and takes pictures of us, and our car.
Thing is, our friend circle included the daughter of the owner of the park. So we called her and told her what happened. Ban pulled, though that same manager was still there the next time we went, so he wasn't fired. We also refer to that guy as punk cop to this day.