My wife told me, “please go to the store and buy a carton of milk and if they have eggs, get six.”
When I came back with 6 cartons of milk she said, “why in the hell did you buy six cartons of milk?”
I said “they had eggs.”
Sometimes being extremely specific helps some people understand. Anything that could have multiple meanings is always open to some interpretation. And while it would be nice if they asked for clarification, they may not because they think they fully understand the instructions.