I♥JS

{} + [] >>> 0
parseInt({} + []) >>> NaN
!{} > ~{} >>> true
~[] >>> -1
{} + 0 + [] >>> "0"
0 + {} + [] >>> "0[object Object]"
{} + [] + 0 >>> 0
typeof null === 'object' && null !== undefined && null == undefined >>> true

@grownseed I recommend (if you've not already seen it) https://www.destroyallsoftware.com/talks/wat on the same sort of thing in Ruby & JS

x = new Boolean(false); x == !x; >>> true

@bencevans I saw that talk, forgot about it, thanks for reminding me, lots of fun :)
@BrentNoorda pretty cool! Also the reason why I never use the Boolean constructor ^^

Keep them coming, I find that stuff really amusing!