Ted: Guys, guys, guys. This storm is serious. Luckily, you are friends with a former Boy Scout. And a Boy Scout is always what?
Robin: Unpopular?
Lily: Beaten up?
Barney: Going to the movies with his mom?
Ted: A Boy Scout is always prepared.
Robin: Prepared to spend lunch in his locker?
Marshall: Prepared to die a virgin?
Barney: Prepared to paint his sister's nails?
Ted: Prepared for emergencies!