In American Sign Language, they frequently sign “Same” with a “Y” hand shape (pinky and thumb extended from a fist), waving the hand between pointing the pinky at the other person and the thumb at the signer’s chest, with a facial expression appropriate to the subtleties of the specific comment.

They don’t seem to get tired of it, since in addition to saying, “Me, too” it has an emotional sense of common identification. “I feel that same thing,” or “I feel the same way,” added to the “Been there, done that,” or “I want to do that, too.”