A man and woman sit together on a white leather couch, deep in conversation. They overlook a broken sky line of trees and buildings, the sky barely visible. Sirens and horns are heard faintly in the distance, but suddenly grow in intensity and volume.

“What’s that noise?” she asked, the sirens and horns growing so loud that only her screams are audible.

“It’s my BS detector”

“You named a car alarm?”

“No, I built an actual BS detector?” I said

“You know that’s supposed to be a metaphor, right?”

“And?”

“And what, it’s a metaphor!”

“Well, this one is real, and nice and loud too.”

“So you’re saying I’m full of shit?”

“No, no, no. That’s not how it works. It’s only able to detect when I am BSing.”

“How is that useful?”

“It’s not really useful, it is neat though.”

“Whatever” she said. “What were we talking about again?”

“Exactly.”