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.

[sharing too much mode: on]

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.

Not sure about the corollary as long flights always have restrooms and the time to use them. But maybe you are just uncomfortable on airplane toilets which is fine.

Oh, I've used them. It's uncomfortable, plus there's usually a long line both before and after you... Not the best if you're in a hurry.

Literally been to hundreds of cities all over the world and have always been able to find a public restroom until San Francisco!

Although I would imagine New York City might be the same, never been there.

30% of us has this laxative effect.

I think it's a very healthy effect to be honest.

It cleanses our digestive system.

Ugh, that sucks. You have my sincere sympathy!