From u/soupor_saiyan Tales From Retail:
So I work at an ice cream shop and have many tales from my several years working there. One that stood out for me today was a man who didn’t seem to know what mint ice cream was.
I was serving him and his wife and out of the blue he just asks me this question: “Is your mint chip made with vanilla ice cream?”
I was baffled by this but I responded that no it was made with mint ice cream. He then went even further by exclaiming “Oh! How silly of me-” (I was briefly relieved that he had realized his mistake until the next couple of words came out of his mouth) “it must be made with chocolate ice cream then, right?”
At this point I had my mouth open in awe of this man's sheer stupidity, but I managed to with a straight face tell him again that no, our MINT chocolate chip was made with MINT ice cream.
He seemed to realize that he wasn’t going to get the information of if our mint ice cream was made of chocolate or vanilla out of me so he ordered a different ice cream that he could wrap his head around - plain vanilla.