Long story short, 4 of my co workers and I are driving 2 hours to a theme park for a Halloween thing. Another co worker just saw we were going (on fb) and invited herself and her "boyfriend", whom all of us find creepy as hell.
How do you nicely uninvited someone who invited themselves? I still have to work with this chick.
EDIT: So we all decided to suck it up and let them tag along, but they want some of us to ride with them, we declined saying we all had to take our own cars since it's a long drive and some of us made plans to go to other places before we get there. There was really no "all girls" or "no couples" excuse since one co worker going is a male and his girlfriend, who also works with us, is going. Hopefully it still goes nicely, but lesson learned --- NO posting about private plans :P