Exactly. You can get a venti coffee at Starbucks and get a refill for 52 cents and if you're not from San Francisco, you don't realize how brutal the public toilet situation is until its too late.
Coffee almost always makes me "move my bowels" pretty fast. I solve this by making sure I never have coffee unless a restroom is available.
A corollary to this is that long flights are a nightmare to me. I mostly avoid having in-flight meals, if I can.
Although I would imagine New York City might be the same, never been there.
I think it's a very healthy effect to be honest.
It cleanses our digestive system.