RunningMan:
I know it seems a silly question to most people here, but for a non technically minded person, I don't see this as an unreasonable thing to ask.
Imagine that that's your mum or dad or aunt or whoever wanting to move the phone a bit further away from where it is, but they've heard you talking about line length and such things, and want to make sure it won't be a problem.
I don't know how the OP answered this, nor the exact question asked, but I'm not a fan of having a laugh at potential clients - it doesn't tend to convert them into actual clients.
I think you can be polite to the asker and still enjoy a laugh over it with your mates.