This category features customers whose mishandling of vocabulary and grammar are so bad that we literally have no words to describe them!
Me: “You’ll also want to check out the Free Application for Federal Student Aid. You can apply for that online if you have internet connection.”
Caller: “I do. What’s the URL?”
Me: “All right. It’s www dot ‘F’ as in ‘Frank,’ ‘A’…”
Caller: “Sorry, how do you spell that?”
Me: *confused* “…How do you spell what?”
Caller: “Effasinfrank.”
Related:
D As In Duh

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860 Thumbs Up!)
Me: “What can I fix for you today?”
Customer: “Uh, I’ll have a Tai Chi.”
Me: “A…what?”
Customer: “A Tai Chi!”
Me: “Oh, you mean a Chai Tea!”
Customer: “No, it’s a TAI CHI!”
Next Customer: “Ma’am, Tai Chi is a form of Asian exercise.”
Me: *to first customer* “Here’s your drink.”
Customer: *snaps up her drink and rushes out*
Next Customer: “Whatcha got in an aerobic latte?”

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(In order to proceed on our site, users need to type in a signature consisting of their name and their username, which is an eight-digit number.)
Customer: “Every time I’m typin’ in my signature, it ain’t accepting it.”
Me: “Okay, well, I just want to make sure everything’s entered correctly in our system.”
(I read out their name, including spelling. Everything’s correct.)
Me: “Alright, let’s check your user ID. It should be zero-one-six—”
Customer: “Now, hold on. Do you mean the letter zero, or the number zero?”
Me: “…The number. Zero is a number.”
Customer: “Oh…huh. Well, that may be the problem. I been usin’ the alphabet-zero this whole time!”
Related:
You’re An Idi0t
You Have O Sense

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801 Thumbs Up!)
(I was born and raised in Alaska. I’ve been told by a lot of people that I sound very generically American. I’ve been answering questions for this couple for about five minutes.)
Me: “Let me know if there’s anything else I can help you with!”
Male Tourist: “No, we’ll be fine, thanks.”
Me: “Okay. Enjoy your stay!”
Female Tourist: “Thanks, honey. You speak real good English for being an Alaskan!”

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814 Thumbs Up!)
(Note: we sell almost any kind of vegetables at our grocery store.)
Customer: *checks a list* “A pound of [incomprehensible], please.”
Me: “Could you repeat that, please?”
Customer: “A pound of [incomprehensible]!”
Me: “Sorry, sir, never heard of [incomprehensible].”
Customer: *angrily* “[Incomprehensible]! You call yourself a grocery?!”
Me: “Sorry, sir, we don’t have it!”
Customer: “I’ll never come back here again!” *leaves grumbling*
(An hour later, he returns.)
Customer: *apologetic smile* “Couldn’t read my handwriting. A pound of roast beef, please.”

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973 Thumbs Up!)