FirstHusband is an engineer and FavoriteSon has probably seen every “Mythbuster” episode ever made. They both do what I call “scary math” while listening to music in headphones, they heckle the Mythbuster experiments, while secretly envying Jamie and Adam and they sometimes explain things to me in such a way that my only possible response is to nod affirmatively and raise my eyebrows in rapt interest and amazzzzzzzzz . . . oh. sorry.
I found this on youtube and knew they would appreciate the humor. So, this is dedicated to my two FavoriteNerds and our two black cats, Boo and Bob (sister and brother).