Carolyn Snyder apparently has a lot of exciting analogies.

“…discussing paper prototyping without talking about usability testing is like trying to gossip without using pronouns.*
*The next time you throw a party, ask your guests to sing “Let Me Call You Sweetheart” sans pronouns before you’ll give them back their car keys- not because it’s an effective sobriety test, but because it’s funny.”

-Carolyn Snyder, Paper Prototyping

I think I’ll try that.