"fancy meeting you here"


Is there a phrase that Japanese people use to express amusement when seeing
each other unexpectedly? For example, if you just said goodbye and then ran
into each other somewhere else?




A common word for this is [奇遇【きぐう】](http://jisho.org/word/%E5%A5%87%E9%81%87)
(not to be confused with 奇偶: oddness and evenness (of numbers)). 奇遇ですね is an
idiomatic phrase worth memorizing as-is.

>   * こんなところで会うとは奇遇ですね。 What a coincidence to meet you here!
>   * 君も北海道生まれか、奇遇だね。 Oh, you were born in Hokkaido, too? What a coincidence.
>

But if you just said goodbye and then ran into each other soon after that, you
can't use this phrase. (Can you say "fancy meeting you here" in that
situation?)

