Duck Quacks Don't Echo

Season 1

A test to see if attraction impairs speech abilities. Also: examining whether red hair affects pain tolerance; using vacuum cleaners to climb walls; and making music with bananas.

The guys test whether fear affects foot temperature. Also: dance experiments; a look at coconut water as a possible substitute for blood plasma.

An experiment is conducted to see if women can remember directions better than men. Also: dog behavior; the origins of matches and lighters.

The guys test whether strong chlorine scent is a good indicator of cleanliness in pool water. Also: an experiment with pupil dilation; a look at the dimensions of a blue whale's heart.

The guys test if pigeons can carry messages faster than fax machines; the chicken-or-egg origins dilemma is addressed. Also: a test to see if smells can affect a sleeping person.

A test to see if profanity heightens a person's ability to endure pain. Also: Ferrari musicality; blind caterpillars.

The propulsion abilities of lawn mowers are tested. Also: bending water with static electricity.

The guys test whether bubble wrap can protect a person from a lengthy fall. Also: color effects; cow names; bouncy-ball kinetics.

Seth presents the theory that speaking rhymes can make a person more believable.

Tom puts super glue to the ultimate test as he finds out whether or not it can hold a grown man.

The guys try to make pudding dance. Also: a swimsuit I.Q. test is performed; pigeon memory is examined.

A shrimp's endurance level is determined. Also: a placebo test examining drunkenness; taste functionality in a dry mouth.

The guys try to balance the weight of a pickup truck on four ceramic mugs. Also: a test of motor skills.

Unusual hypotheses are tested for validity. In the series opener, the guys test whether germs can spread from the toilet to a toothbrush several feet away.