The following scene played out this afternoon, in a shop with about 20 square feet of floor space.
CUSTOMER: I'll have 250g of [coffee type A]
Assistant fills it out and seals up a bag full (1-2 mins).
ASSISTANT: Is that everything?
CUSTOMER: Actually, I'll have 125g of [coffee type B] as well.
Assistant fills it out and seals up a bag full.
ASSISTANT: Is that everything?
CUSTOMER: No, I'll have 125g of [coffee type C].
Assistant fills it out and seals up a bag. A queue is building up.
ASSISTANT: Is that everything?
CUSTOMER: Thinking about it, I'd quite like 125g of [coffee type D] too.
Assistant fills it out and seals up a bag.
ASSISTANT: Is that everything?
Assistant fills it out and seals up a bag.
CUSTOMER: Erm... 125g of [coffee type E].
Assistant fills it out and seals up a bag. By this point, the queue is covering most of the shop.
ASSISTANT: Is that everything?
CUSTOMER: Yes.

Normally I'm quite calm, but I was close to losing my temper after being stood behind that customer for nearly 15 minutes.
( The Mock TurtIe ™ --- Thinks you are a cunt, on, Sat 17 Dec 2011, 20:36, 2 replies, latest was 14 years ago)

Reminds me of the "anders" I encountered so often during my time behind bars...
Waiting until a drink is prepared and on the bar before adding
Ander pint of larger...
Ander gin an tonic...
"ice and lemon sir?"
I don't know...
"that's ok, I'll put some in a separate glass for you, should you ever find out"
Etc.
As if decent bar staff can't remember a round of a dozen drinks...
The worst were the butt-monkeys who would wait until the end of a round to order the pint of Guinness.
( blaireau69 , the Cumbrian Travis Bickle., Sat 17 Dec 2011, 21:00, Reply)

if they do that (the guinness thing)
Immediately fucking kill them. There isn't a court in the land that will convict you.
( the mighty badger Aphrodite, on a bar stool, by your side, Sat 17 Dec 2011, 21:05, Reply)

Probably right there!
Gouging of the eyes is probably a suitable alternative punishment.
( blaireau69 , the Cumbrian Travis Bickle., Sat 17 Dec 2011, 21:16, Reply)

well, if you will go to a fucking shop that sells loose coffee
you've only got your fucking self to blame, frankly.
( the mighty badger Aphrodite, on a bar stool, by your side, Sat 17 Dec 2011, 21:07, Reply)