Head banging to the wall moments

Me in maths class

"But it didn't cost that on the tag."
"Yeah, but this added tax."
"But why did it go up so much?!"
(•_•*)

"Can I get grass fed chicken?"
(;-;)

Its worse when the customer tells you he understands... when he clearly doesn't... and even worse when he gets an attitude like "What, do you think I'm stupid", when he clearly is. .

Sometimes i want to say to the customer "im sorry i didnt realize you worked here too."

"I'm sorry ma'am, this item is currently out of stock."
"You don't have it in the back?"
"Unfortunately not, I'm sorry."
"Are you sure?"
"Yes ma'am, I'm sure."
"Can you just check for me?"
;___;