When someone begins talking while you are already talking and interrupts you. The word can also be applied in situations where
people are not supposed to talk i.e at an inappropriate
time, during a moment of silence, or even during a movie.
The phrase comes from "jaywalking" when
people who cross the street when they are not supposed to and interrupt the flow of traffic.
1. Dude would you quit jaytalking, I'm trying to
tell a
joke.
2. That guys a total jaytalker, he interrupts me every
couple seconds.