French: hétérogénéité, ça a beaucoup d'accents.

Polish: welcome to sunny Łódź.

Here's how you say "tax return" in Thai: คำร้องขอคืนเงินภาษีอากร

This Mongolian person's twitter username character is not a soft-hyphen:
ᠭ-ᠪᠢᠰᠢᠷᠡᠯ

Let us all worship at the shrine of Emoji: how else could you throw a pile of poo at a snowman?
💩→☃

This sentence is full of non-breaking spaces but it'll be broken anyway.

I put a hyphen in llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch and it ended up as a space.