Used to be my favorite thing to do, go to the back, come back out and furrow my brows, go "sorry, I looked at every shelf, i was not able to find it" sadface, and 4 out of 5 times they're oh okay, thank you for checking, appreciate it Then theyd be that one fucker that eventually make me quit cs

"Checking the back" is how I got breaks when I worked at a liquor store.

once after being asked this question i walked into the back, sat down, and drank an entire 2 liter of soda over about half an hour. they apparently left very angry after about 15 minutes, but i never saw or heard from them again lol