Because you're exciting? (and Boolean seemed extraneous)

Esoteric Javascript Snarky!  Probably much more comprehensive to some of you than Martin Short humor.  Although possibly just barely.

Per Padolsey, "Truthy: Something which evaluates to TRUE. Falsey: Something which evaluates to FALSE."  But like many things in programming, it requires a bit of exploration to understand that falsey/falsy is true (or accurately false) in five cases: undefined, null, NaN, 0, "" (empty string), and false.  These two articles can give you a good overview:

• http://www.sitepoint.com/javascript-truthy-falsy/
• http://james.padolsey.com/javascript/truthy-falsey/

Snrky: When you reply to my emails, why is my quoted text always preceded by a !! ?
Title: Because you're exciting? (and Boolean seemed extraneous)