The shortest feedback loop I can think of is doing improvisation in front of an audience.
A drunk driver is very dangerous. So is a drunk backseat driver if he's persuasive.
Cottonballs are an example of something I'd want to buy, but not have as a nickname.
The boomerang is Australia's chief export (and then import).
When watering your plants, try to talk to them - say something like, Hold it right there and then shoot them with water gun.
A straw enables you to drink without using your wrist. A straw is your friend - until you lose eye contact with the straw. Then it will betray you and make you look like an idiot.