10 did-you-know facts. Take this survey! Did you know? A shrimp's heart is in its head. Did you know? The "sixth sick sheik's sixth sheep's sick" is said to be the thoughest tongue twister in the
1. Did you know? A shrimp's heart is in its head. 2. Did you know? The "sixth sick sheik's sixth sheep's sick" is said to be the thoughest tongue twister in the English language. 3. Did you know? Rats multiply so quickly that in 18 months, two rats could have over a million descendants. 4. Did you know? Wearing headphones for just an hour will increase the bacteria in your ear by 700 times. 5. Did you know? In every episode of Seinfeld there is a Superman somewhere. 6. A duck's quack doesn't echo, and no one knows why. 7. 23% of all photocopier faults world-wide are caused by people sitting on them and photocopying their butts. 8. Most lipstick contains fish scales. 9. Like fingerprints, everyone's tongue print is different. 10. If you sneeze too hard you can fracture a rib. If you try to suppress a sneeze you can rupture a blood vessel in your head or neck and die. If you keep your eyes open by force, they will pop out.