10. Eat on public transport.
Also not cool: Publicly shaming women who eat on public transport.
12. Have a phone conversation on public transport.
Your ringtone should either be a polite cough or nothing.
14. Be a tourist.
“London, baby!” = Not a thing.
- It's time: Hillary Clinton and Donald Trump will face off tonight at 9 p.m. ET in the first of three US presidential debates.
- Ted Cruz said Trump's list of potential Supreme Court nominees spurred his decision to endorse his former opponent.
- Parents of the suspected Washington mall gunman who killed five people said he "had mental issues."