Chadwick Boseman and Sienna Miller test each other's knowledge of South Carolina and British slang. From "fixin' ta" to "arse," the stars of '21 Bridges' share some of their favorite hometown phrases.

'21 Bridges' starring Sienna Miller and Chadwick Boseman is in theaters now!

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Chadwick Boseman and Sienna Miller Teach You South Carolina and British Slang | Vanity Fair