I actually got a kid to stop his 2012 delusions by saying "Oh, puh-leez" and then launching into an explaination. It took the "oh, puh-leez" to get his attention.

__________________
I want to go back to the moon.
I don't care which rocket you use, whichever one you pick, I'll like it, I swear.
"If you think the LHC will create black holes, you might as well believe Hobbits are at the bottom of your garden."- Dr. Mike Inglis
Rovers forever! - ToSeek