Examples:
Moron: I want a half caf hazelnut nonfat latte
Me: What size?
Moron: half caf hazelnut nonfat-
Me: What size?
Moron: half caf hazelnu-
Me: What size?
Moron: half caf (started to sound frustrated)
Me: (Raising my voice and getting a tone like a parent telling off a misbehaving child)
What size?!
Moron: Oh... grande.
...
Or the one that makes me want to SMACK them.
Me: Hi! How are you doing today?
Moron: I want tea!
Me: That's great, I'm doing well thanks for asking, what can we get you?
Moron: Tea!
Me: What kind of tea?
Them: Just plain tea!
Me: We have black tea, white tea, green tea, herbal infusions...
Them: Just plain tea!
Me: Okay... we'll make that an Awake...
Them: That wasn't so hard was it? (patronizing tone)
Me: (Imagines snapping their retarded neck)
Scenario two (customer looks at me confused and has a look like they just assume I am giving them what they want and that I can read their mind, lol... they shouldn't be so trusting, they have no idea how badly I could screw things up for them xDDD)
Me: Now... what size?
Moron: Ummm... Tea!
Me: Yeah, I got that, what SIZE?!
Moron: Oh... ummm, small.
(if it's rush and I am planted on register)
Me: (calling out) "Tall Awake!"
Moron: No! I said SMALL.
Me: Tall IS small.
Moron: (gapes with their mouth open like a neanderthal).