A couple of days ago I was reading through TextsFromLastNight (NSFW) and ran into the best conversation-starter/work-ender question ever. Absent the context of the TFLN post, I'll post it here:
"Who would win in a fight - a pterodactyl that poops chainsaws or a bear with machine guns for feet?"
Me, I'm betting on the bear. And when I mentioned it just in passing at work my team (including me) instantly devolved into a half hour of arguing. If we'd had a white board handy we could have covered it with our "logic".
And man, it was fun.