What Did You Say?

A customer walked into our showroom yesterday and started to peruse the cars. He got to one with brown interior.

...And it goes a little somethin' like this:

Customer: This is a nice car. Which one of these is yours? (So original, Sir)
Me: It is, and that black one right there, valet up to my desk is a perk of working here. (Raises eyebrow, noting sarcasm)
Customer: This would be even nicer if the interior didn't look like Poop.
Me: *crickets*

Did he really just say that?  How do you even respond? "Oh yes, actually that interior is from our Fecal line. It's all the new rage now among luxury vehicles.