today in conversation irony

Scene: the upscale yupster organic veggie grocery affectionately known as “food hole”

Hipster Cashier, to bagger: You really have to be on your A game today, dude.
Stoner Bagger, to HC: Really? Why?
Hipster Cashier: I heard they’re sending in Mystery Shoppers from corporate to watch us and make sure we do a really good job.

(Stoner Bagger promptly drops my eggs onto the counter from a great height. There is a long pause.)

Hipster Cashier, to me: You’re not a mystery shopper, are you?
Me: (enigmatic smile)