1. I'm not sure if this counts, but I was part of a philanthropy group at my undergrad university that was directly led by the President's wife and a Master's degree student. Said student had me helping out at a job fair, tearing down tables and helping people move things to their cars, and when I showed up for my designated time slot a) most everyone had gone b) the Master's student had to rush off c) no one needed help with the small things and light posters they'd brought. So I stood around awkwardly all that time for no reason and basically circled the room before realizing that I could just leave. I was there for maybe fifteen minutes. Myself and the other students working other time slots had been given the impression that we were really needed to help out with this career fair, but the reality was we were superfluous.
2. This is sort of a mirror to the current topic. A girl friend got married and made sure to tell us orally and in writing that all bridesmaids could bring a date. She was pretty adamant about the date, which was puzzling, and so were the bridesmaids, and they seemed perturbed that I didn't have one. I was puzzled as to why until I saw the setup of the tables: There was one table for the bridesmaids and dates and another for the groomsmen and dates, and a few others for guests. The thing was, all of these groups were pretty far apart. At dinner there was an empty chair beside me and the other girls spent the time talking to their boyfriends. I didn't have a boyfriend at the time and I didn't know of a guy who wanted to drive up an hour into the mountains to get to the wedding-I'd spent the night the previous night before in the cabin so I was already there. But yeah, really awkward. I cut out as quickly as was polite.
3. A guy friend once dragged me to a party with some girls from a sorority and his fraternity. Everyone was loaded and I personally wanted a drink to sort of loosen up because I didn't know anyone, but when I went into the kitchen they were all staring at me like I had a second head-I'm not saying that this is true of all fraternities/sororities but since I wasn't Greek, they made it veryclear that I wasn't wanted and they didn't appreciate me pouring myself a drink. I heard my friend arguing with a girl around the corner and her saying "Okay, but why did you even bring her and is she gonna drink all of our booze." I didn't end up getting a drink and spent most of the night outside on my phone.