1 definition by Michael Martin,
A situation where two people begin conversing with each other, then one of them receives and answers a text while talking to the other person, usually with the texter continuing with "Yeah"'s and "uh huh""s
I was so mad yesterday when i was talking to my friend and he started a 2-and-a-half-way conversation, completely interrupting our discussion about quantum physics
by Michael Martin, August 30, 2008