Douglas Adams, talking about the internet in 1999:

I suppose earlier generations had to sit through all this huffing and puffing with the invention of television, the phone, cinema, radio, the car, the bicycle, printing, the wheel and so on, but you would think we would learn the way these things work, which is this:

1) everything that’s already in the world when you’re born is just normal;

2) anything that gets invented between then and before you turn thirty is incredibly exciting and creative and with any luck you can make a career out of it;

3) anything that gets invented after you’re thirty is against the natural order of things and the beginning of the end of civilisation as we know it until it’s been around for about ten years when it gradually turns out to be alright really.

Source: http://www.douglasadams.com/dna/19990901-00-a.html

When JFK visited Berlin he was mocked a bit by Germans for saying "Ich bin ein Berliner," which is apparently some kind of a jelly doughnut. Of course to an English speaker this sounds fine. It just occurred to me how funny it would have been had he given the same speech in Vienna, where he'd have said, "Ich bin ein Wiener."