Random wierd guy

Tuesday night at 1:00am a couple my friends and I were walking from the Apple store on 5th Ave, over to this bar where we are friends with the bartender. As we crossed over Park Ave on 58th, there was a man standing on the corner, carrying nothing but a flat 9 x 11 manila envelope. As he saw us he made an initial advance towards us, presumably to engage us in conversation. My first thought was he was a wierdo and all three of us continued past him in our typical New Yorker fashion. On second thought, maybe he was lost and needed to be pointed back to Times Square. I turned back around and asked him if he was ok. He said very agressively and drunkenly, "Yes, I'm ok! Are you ok?" Alright, wierdo status confirmed. I didn't respond and we continued walking away from him. He then shouted at us that we were big dickheads. We quickened our pace, while he began walking/staggering in the same direction as we were headed, occasionally yelling . And don't you know, he ends up at the very same bar that our friend is working at. He actually got there first as we had made a small detour before arriving. As we came in, he moved his body to block our path, and we physically had to shove our way past him to escape from him once again. He had already found the only male hustler in the club and is groping his, um...merchandise and kissing him in a sloppy drunken way. The mysterious manila envelope is on the bar top. Once the hustler realizes that this guy is not going to "buy", he disengages and the man asks the bartender (our friend) to hold the envelope behind the bar for safe-keeping while he trolls the outside patio. The envelope has never been folded, and looks like it contains no more than 10 sheets of paper. It's rather unwieldy to carry around on a night out on the town, which leads me to believe the contents are important to him, otherwise, he'd have folded it up and shoved it in his pocket. We immediately egg our bartender friend on to show us the contents of the envelope, which he does. It was......a handout from his Anger Management class.