LONDON -- When Cersei isn't busy plotting to secure the Iron Throne or xemphim18 trungquocpublicly shutting down Donald Trump, she can occasionally be found shaming bad drivers.

On Monday night, actress Lena Headey took to Twitter to pen an open letter to the parents of young drivers in LA.

Needless to say, the Queen (or former Queen, at least) was unimpressed.

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The best bit was definitely her sign-off.

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We don't know who you are or what you did, unnamed BMW driver, but you've made yourself a powerful enemy.

BONUS: The Adventures of Sad George R. R. Martin.

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