a passenger who reads and replies to any and all text messages recieved on the drivers phone, thus alowing the driver to focus on the road and not hit anything or get pulled over for reckless driving.
Guy 1: "Woah, i almost hit that telephone pole back there, Dude you should be my designated texter "

Guy 2: "Yeah no problem bro"
by jdcftb12 August 5, 2008
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one who makes sure that when a friend is drunk only sensible text messages are sent
Thank goodness Tawaldi was my designated texter or that guy would have never noticed these thighs girl.
by dr. jeseus h. christ October 21, 2008
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