There's this annoying dude that attends sporting events, especially those that are televised, and holds up a sign with the message "John 3:16 on it." Naturally, he intended people's natural curiosity to understand the message causing them to look it up.
Anyway, I decided to pull his chain a little, just for fun. I made a sign, and attended a football game while dressing as primly as I could. Whenever he held up his sign, I held up my sign which said simply: "Genesis 19:31." I'm sure he he regretted not having his trusty Bible and immediately looked it up when he went home.