slang A phrase used to indicate one's identification with something, often in a self-deprecating, humorous way. Although less common, constructions like "it you" and others can be used to point out the similarities between something and someone else. Mid-yawn, she saw the picture her sister had texted her of Anna from "Frozen" unglamorously waking up on coronation day and texted back, "It me."
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.