do a (someone)

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do a (someone)

To act as someone or something else usually does. Sally did a mom and hit the trashcans while backing out of the driveway.

do a —

behave in a manner characteristic of a specified person or thing. informal
2001 Times One reporter even got the brigadier in charge to ‘do a Blair’ and come over all emotional while discussing the cull.

do a somebody

(informal) do or behave as somebody did or would do: Now don’t go and do a Mr. Carpenter on us. He told us he was leaving only three weeks before he went, and it took us months to find a replacement.
See also: somebody