Simple. I start by posting Did you know... and I end it with something like an unusual fact. Then, the next person says "yes" or "no" followed by their own Did you know...
Yes. I don't believe reasoning, in this case, is necessary, either.
Did you know... that the first electric chair (is it called that?) was invented by a dentist?
really?
I've heard it more than once, but not from 100% reliable sources, even though they were quite certain. Can't be bothered to google it right now, but might check later .
