but lying is never a good answer
That being said there are things in life you have to learn and also a time to learn them.
Thats a parents responsibility and its hard when you ''get in the way''(no offence TroyerGal)
I would think that someone with a compulsion to tell a stranger's 4 year old something that would make them cry in the name of 'truthfulness' probably shouldn't be allowed to be around small children. But that's just me.