Seth presents a theory that is commonly debated: Is it really possible for bacteria from a flushing toilet to reach a toothbrush sitting on a bathroom counter 6 feet away? Our experiment puts the urban legend to rest once and for all (hint: the results are disturbing). Later, Tom challenges Seth and Michael to test a theory that is easier said than done: Will any of them be able to achieve the seemingly simple charge of eating six saltine crackers in a minute or less without a sip of water?

Things get heavy as a two-and-a-half-ton truck makes an appearance in-studio as four ceramic coffee mugs attempt to support its entire weight. Tom's challenge of writing the number six while rotating your corresponding leg clockwise baffles everyone.

What happens if you give someone a virgin drink but tell them it's alcoholic? Seth tests the theory of whether drunkenness is truly in the eye of the beer-holder. Michael tests a shrimp's endurance, believing it's greater than the average human.

Seth puts the nickname "bird brain" to the test, believing that pigeons can remember human faces. We all know there's nothing like a little fun in the sun--but is your swimsuit making you...dumber? Can pudding dance--and can you dance on top of pudding?

Tom, Michael, and Seth prove that: You can stretch a bathing cap enough for an adult to fit inside of it. There are mites that live on your eyelashes that are visible under electron microscope. People are more likely to believe statements that rhyme.

Tom, Michael and Seth prove that: The color red enhances men's attraction to women. You can survive a 13' drop if you're wrapped in bubble wrap. Cows that are given names produce more milk than cows that aren't.

Tom, Michael and Seth prove that: A rock shot from a lawnmower can have the same force as a bullet from a 9mm handgun. You can bend a stream of water with static electricity from a balloon.

Michael claims that swearing helps increase pain tolerance. And Seth has a test that's music to a gearhead's ears: Are Ferraris engineered to idle at the third and sixth harmonic? Tom's fact proves just how strange nature can be.

Which is faster: Carrier pigeon or fax machine? Don't plan on the aroma of coffee getting you up in the morning--smells are unlikely to wake you in a deep sleep. The ultimate question is answered: Did the chicken or the egg come first?

There's more truth to the saying "getting cold feet," and Tom proves how.

Tom settles the age-old debate: Is it true that women are better than men at remembering directions?

Is it possible that after a conversation with an attractive woman, men get ... dumber?

If a pool smells stongly of chlorine, is it dirtier? You may think again before diving in.