How hilarious! I have a similar story that happen at Prudential's Corporate Headquarters. I was a victim of someone else's stuppidity, but the story is very similar. After the shock I had total amneshia (not sure how to spell). Was completely disoriented. It was as if that all of a sudden I appeared on the earth, not kidding. On top of it, I couldn't stop laughing. I got everyone laughing around me. The police, guards, firemen, people on the street. No one was safe. This laughing thing lasted for a couple of days. I had this thing where all the nerves on the back of my head all the way through my neck tickled all the time, which lasted for almost a year after the incident. Overall having a tickling sensation isn't all that bad until you're in a serious meeting and you begin to chuckle from it! There were so many hilarious little stories that came from this shock that could fill a small novel.
Funny stuff!