Well, after your car has run for quite a decent length of time, the exhaust system gets hot, and once you shut down the engine, it begins to gradually cool over time, condensation can build up from the hot air in the exhaust.
As said it's condensation. If it's leaking water/coolant it's definitely not healthy! and you would get an absolute power of white smoke from the arse end.
has anyone heard that if a car has water (liquid) dripping from your exhaust pipe means the car is healthy??
ive heard a couple of uncles and local men say it but no one has ever explained how and why??
Maybe your uncles were talking about hydrogen cars? lol