Interesting , Most , Video » 11 mind-bending optical illusions you probably shouldn't look at if you're hungover[8 to 11]

Optical illusions are confusing at the best of times, but if you're still feeling a bit ropey after a big night these tricks might make you lose your mind...or your lunch

If you're feeling a bit fragile after a heavy night on the tiles, these optical illusions will make you question your very sanity. Don't say we didn't warn you.

11. The impossi-balls
Watch in amazement as these balls roll uphill on an Escher-esque ramp.
10. The chess board of amazement
The only shapes on this chessboard are black and white squares - but when the small ones are added in a particular way you'll doubt your own sanity.
The soft jazz soundtrack only adds to the overall confusion.
9. The #Madeuthink dog
This cute cardboard pup's big beady eyes seem at first to follow you around the room - but keep moving and you'll see things from a whole different perspective.
8. The pulsating pattern that induces mild hallucinations
Stare at the red dot in the centre of the screen for as long as your delicate head can handle it, then look at something else. That's right, an internet video finally broke your eyes - but don't panic, the effects are only temporary.
Still, probably best to have a lie down before you try and do anything that involves being able to see.

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