Crazy Optical Illusion

I love crazy optical illusions. This one really is crazy. I remember the first time I was told to stare at one of these things I was so skeptical, until of course I did it. Thats when I freaked out! Somone pointed these suckers out to me and I didn't realise how many were on the web. I'm a believer in these things now. The first time I actually bet someone 5 bucks it wouldn't work on me.  Ended up payin up.