at a franchised ice cream store
customer: can you make me a milk shake out of that blue sherbert?
me: are you sure you want a MILK shake with this blue sherbert?
me: okay (I start making the shake and as I pour in the correct amount of milk....)
client: are you putting milk in that?
me: did you order a MILK shake?
me: then milk is one of the principle ingredients!!!!
client: oh no I can't have that