looking for a story that i read about 10 years ago
 

I am trying to find a story that I read for the first time about 10 years ago.
it is about a new office worker, that comes to a office-party and is talked into a sm situation by several co-workers.
It starts with them daring her to take of her panties, which she does take of in the bathroom, and then still at the party she sits in between her co-workers and they keep her legs spread.
after that they move to a bathroom-stall and make her strip, blindfold her and have her perform BJ's etc.
At a certain moment she is performing cunnilingus, and she takes of her blindfold, to discover that it is her (female) boss.
it ends with her being tied down on one of the toilets, a vibrator is inserted, and she is left behind to be discovered by the cleaning-crew.
If anyone knows where I can find that story, please tell me.
I think that the original name of the story was; The Office Party, and that it was written by ''Alexandrea'', but I might be mistaking the writer for the subject, or maybe it was her writing it about her own experience.
Hopefully someone will recognize the story from this information.