My husband is a cop... when he pulls people over for not using a signal, he does one of two things:
1. "So, turn signals weren't an option on your vehicle?" Then waits for them to try and figure out what he just said.
2. "Excuse me... see that sticking out by your steering wheel? Can you press it down. (Then, in a very surprised voice) Ohhhh! So, they do work!"
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Everyone should believe in something. I believe I will head for the beach!