This morning my brother (an engineering nerd, let it be known) emailed to wish me "Happy Pi Day."
Pi, as you know, is the mathematical ratio of a circle's circumference to its diameter.
While pi is a constant, it's also infinite.
My kids get a kick out of listening to The Pi Song.
For convenience pi is usually shortened to 3.14, hence Pi Day -- March 14 -- get it? Get it?
Yeah I know, that's what I get for growing up in a family of nerds...