Activate!

So my friend is at a math party for graduate math students. Yes, apparently math grad students do party. She's not in math, but she decides to go to the party anyway. So, there she is in the middle of a conversation with the PRESIDENT of the math society when all of a sudden he stops talking, sticks his fist out, waits for her to offer up hers as well, and then turns it to the side all the while saying- ACTIVATE! He then proceeds to keep talking as if nothing had stopped their conversation. She was a little perplexed but decided to roll with it. Now we all like to start, end, or punctuate conversations with "Activate" and then just keep going as if nothing is out of the ordinary. This picture is of her "activating" with the president of the Math society. Good, clean fun.