talk to the hand
('cause the face ain't listening)
(With outstretched vertical palm) Shut up — I've no interest in hearing what you've got to say.
Per the source, mentioned below, the idiom appeared along with some other short phrases in the USA in the 1990s.
"It didn't cross the Atlantic right away and the first reference outside the USA is in a piece by Oliver Bennett in The Times, May 1998. In this he recounts a trip to San Francisco and explains some local idioms:
"A contemporary favourite, if you don't like what somebody is saying (a traffic warden, say) is to turn a palm forward and yell: 'Talk to the hand.'"
"It seems it wasn't a universal favourite in the USA by then. That same month the Syracuse Herald Journal (New York) reported a vox pop piece that offered the opinion:
I don't know about you, but if I hear someone say 'talk to the hand' again I will strangle them with their own shoelaces."