The act of saying something, but then going completely quiet and unresponsive for a while after. Usually occurs during phone calls etc.
Person 1: Hey, you wanna hear something funny?
Person 2: Yeah go-ahead
Person 1: *complete silence for 20 seconds*
Person 2: Whatever man
Person 1: *comes back and acts like nothing happened* Anyways as I was saying...
Person 1 is being defined as having Talari syndrome.