im not a number really

You've probably seen this one here before. NaN (Not a Number) suffers from a terrible case of self-deception.

    typeof NaN
    //=> number

--- @3rdEden

Its still hilarious. Now, check this out:

    3..toString();
    // "3"

Explanation here.

(By way of the wtfjs twitter firehouse. Cheers: @devongovett, @getify, @mahemoff. @cramforce, @mathias!)