Interesting , Most , Video » 11 mind-bending optical illusions you probably shouldn't look at if you're hungover[1, 2 and 3]

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.

3. The chair that isn't there
It may look like a chair in a dramatically lit room, but we wouldn't recommend trying to sit on it.

2. The floaty dice of disorientation
Are you looking at a gravity-defying stack of dice, or is the internet playing another cruel trick on your fragile eyes?

1. Circling the square
At first glance it looks like a square moving in a circular motion - but take away the yellow boxes and all that's really happening is two sets of lines moving back and forth.

If you're prone to motion sickness - particularly when you're suffering the effects of an enthusiastic evening - this one

watch 4-7 here.....