The Laws of Physics aren't very practical. A truly frictionless surface wouldn't be any fun.
--Quote from my husband this weekend. Immediately followed by very childish giggles from the both of us.
My husband and I are both software enginners, and many of our friends have computer, engineering, math, or science backgrounds. As the joke goes, when everyone's sober, conversations focus on sex. As the beer flows, talk turns to physics.
Occasionally, obviously, we manage to combine the two....