Me: "Hi! Where can I find a masonry bit?"
Worker guy: "Masonary? Over here. (waves at the huge array of bits I'm standing in front of)
Me: "Okay, I see the bits, but I can't tell which are masonry ones."
Guy: "What size do you need?"
Me: "I don't know, I just need to drill a hole in a cement pot."
Guy: (with what appeared to be a patronizing smile): "Well, I can't help you if you don't know what size - what size masonary bit do you need?"
Me: (starting to get testy): "I heard you, but I have not magically divined the answer since you asked me 30 seconds ago. I am just needing to know which ones are masonry bits, and I'll choose."
Guy: "Oh. All these, here. But it's masonARY."
Me: "Okay, thank you. But it's not."