dentist

*dec05*
Dental Hygenist: "If you don't floss, you are going to get cavities between your teeth."
I've flossed every night since then.

*dec06*
Dental Hygenist: "If you don't aggressively floss your gums, you are going to develop gingivitis."

I was never scared of the dentist even though they yanked out four perfectly good teeth. They just know how to effectively threaten you into action.