This really happened to us in Tokyo:
BRIAN: one hot chocolate please
BARISTA: hot or cold?
BRIAN: What? what are you talking about?
BARISTA: do you want your drink hot or cold?
BRIAN: What the hell are you talking about? How can you have a cold hot chocolate?
AARON: Whoa there.
BRIAN: I mean a cold hot chocolate is just chocolate milk!!!
BARISTA: ??
AARON: He wants it hot.
BARISTA: Hot! Thank you!
AARON: And I would like a lemonade.
BARISTA: Hot or cold?
BRIAN: AAAIIIIGH!!!