Talk To The Hand Meaning

(colloquial, US, idiomatic) Used usually sarcastically to dismiss another person's argument by indicating that the speaker (or writer) is not prepared to hear (or read) anything further that the other person has to say (or write). It is often used while simultaneously holding up the hand with the palm facing the speaker.

Example:   Girl, you can talk to the hand 'cause I ain't listenin' no more.