This one is a special shoutout to my awesome friend Amy, who is incredibly busy finishing up her electrical engineering doctorate from the prestigious CMU, :) but who enjoys some silly dance moves now and then:
--Do I hear a 90s dance break? :) :)
By the way, here is a neat list of all the math-related strips from xkcd. Regrettably, most of the others don't make you want to dance like you've got no shame.
...Sometimes I think we miss our childhoods because things back then actually were better. Lady Gaga's got nothing on these guys!