Me: Hey, your budget sheet has this deadbeat living in Unit 1; whereas, you have been sending all correspondence to Unit 2. I'm a bit curious as to where he actually lives.
Client: He doesn't live in this country.
Me: Ok, my fault, that was way too open ended of a question. Let me try again - which unit, in this particular building, does he own?
Client: Hang on, I'm on my roof, let me visualize this.
Client: ...so I'm facing the street...there's no unit on the right...he's got to be on the left...He owns Unit 1S.
Me: Works for me. FYI, you've been sending all correspondence to Unit 2S.