Ha, what’s wrong with shrimp seller? Something eerily similar happened to me a few years ago.
Me: Hi, I’d like 200 grams of shrimp, please.
Shrimp guy: Sure!
Shrimp guy then takes a fistful of shrimps and puts it on a scale. He then becomes slightly nervous, looking around. Finally, he surmises the courage to talk to me.
SG: Uh, sir, I can’t give 200 grams, that scale’s in kilos!
Me: That’s not a problem. See, it shows 0.170, add more until you get 0.200.
SG: Sir, THAT SCALE IS IN KILOS, I can’t give you grams.