I was none of those things.
While at Miramar for the Friday Night Activity at the conference, nearing the time we were supposed to board the buses to return to the hotel, some fellow attendees and I emerged from the back room and found our way to the main area, from which we'd been hearing a preponderance of 80's music throughout the evening.
There was a dance floor.
And on that dance floor, there were a bunch of computer programmers and accountants (How do you tell if your accountant is an extrovert? He looks at your shoes while he's talking to you, instead of his own.), paying no attention whatsoever to the tour directors trying to get everyone to board the buses, but instead, getting their groove on while the camera crew went wild capturing this unheard of activity. (Give a bunch of introverts a little alcohol, and watch the fun begin! (except for those of us that don't drink, like me))
They were all having so much fun, they beckoned everyone to come and join them. Including me.