What’s a customer pet peeve of yours?

One of my biggest pet peeves at work is when a customer waits until I’ve finished ringing up their items- or even after I’ve given them the total- to suddenly “remember” they need gas. Even worse are the ones who leave the counter to go figure out what pump they’re on, or the ones who vaguely point outside and ask me what pump they parked at as if I somehow memorized their vehicle the moment they pulled in. Like, come on, dumbass… did you seriously forget why you came here in the first place and parked at a gas pump instead of a regular parking spot? Did you not think to turn around and look at what pump you parked on before, or as you were walking inside?! Be so literally deadass.