Mind f**ks

i like to think problems through, not math problems, but logic problems. these logic problems include things any where from riddles, optical illusions, to paradoxes(my name sake). So this thread will be for you to post any so called mind f**ks.
Please no math home work!
any answers to problems please include in spoilers.
here are a few examples
an Illusion

Spoiler:

Riddle
Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?
Answer to the riddle

Spoiler:

dat van is trippy

Paradox:
Robot Santa your standards say that you must kill anyone naughty,
but their set to high so you kill innocent people,
that makes you naughty and therefore must kill your self.

Spoiler:

That paradox can easily be explained. The blue fairy is a gigantic trolling bitch.

hahahahahahahaha

mindfuck:
This statement is false.

that is similar to the
"this statement is a lie" paradox. Otherwise known as the lie paradox.

EDIT: Ninjad

wheatlys response: true. yeah definatley true. whats another one?

recently resized:

Awesome, awesome game.

I often expect the unexpected in an attempt to make the unexpected easier to expect.

Just found this awsome illusion

Spoiler:

this took me a little while to find so here is a hint if you need it

Spoiler:

It's not an illusion but it is fucking awesome.

oh holy shit, i stared at that a while before realising...

lolfake

The statement "it's opposite day" is a paradox. If you said it was opposite day, the opposite of what you said would be true, so therefore it is not opposite day, but then it would be opposite day because it is not... See what i mean, damn squidward really wanted to make spongebob's mind go "KABOOM"

Wolfhe wrote:

recently resized:

Awesome, awesome game.

THANK YOU. i wanted that but was too lazy to actually go and find it xD

got to pirate bay
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