Learn you some Javascript

Lol

I really don't like the split personality between primitives and objects...

five = dis.call(5) assigns object via "this"

five.wtf = 'potato' assigns wtf prop to object [Number: 5]

five * 5 == 25, it gets a number from that object, multiplies it by 5 -> same as typeof(5+'a') is string and it doesn't modify the original value of 5

five++ gets value from object, adds 1 _and_ modifies original value to the new_value = old+1 (i.e. 6)

five now _isn't_ object

you can't assign properties to numbers(in a non-retarded way), therefore "undefined"

five is number 6, not object

maybe it's an object. maybe it's not. who knows.