It is 10:00 at the police station and there is only 2 officers working that day... Billy-Bob and Billi-Jo.

Billy-bob, "Hey billi-jo...can I stick my finger in your belly-button?"

Billi-jo, "Sure billy-bob!"

...now its 11:00 at the police station...

Billy-bob, "Hey Billi-jo...can I stick my finger in your belly-button?"

Billi-jo, "Sure Billy-bob!"

...now its midnight¹... and the power goes out...!!

Billy-bob, "Hey Billi-jo... can I stick my finger in your belly-button?"

Billi-jo, "Sure billy-bob!... wait! Billy-bob thats not my belly-button."

Billy-bob, "I know... and thats not my finger!"