do a somebody

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 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