After I posted this morning about Commonly Botched Idioms: To Each His Own, I received an e-mail from Doug:
Quick rule:Hi Snarky! One of Honda Civic's ad campaigns also makes this mistake. As seen in this video, the tagline is 'To Each Their Own.'
- 'Each' is singular, so the possessive pronoun must also be the singular 'his', rather than the plural 'their'. Therefore, the expression is 'to each his own'.