Ironic twist... The other day when we were FReeping this very crowd, one flower child spotted a FReeper sign saying, "LET'S ROLL" and she walked over smiling that vacant smile of a simpleton. She stopped and asked the meaning of the term, "Let's roll," whereupon we patiently explained how Todd Beamer called it out as they rushed the terrorists on Flight 93 - just before their deaths.
You could see that simpleton smile waver and vanish as she realized what a stupid moronic question she'd asked... Priceless.