When one switches from one subject to another then back to the original within a short amount of time.
Or when one starts typing on sentence then in the middle of said sentence types something completely different and finishes off with what was originally meant.
I like how on urban dictionary people try to sound insanely smart... holy fuck I can hear a tornado outside (talk about adhd typing.....) by typing terms like "an expression used", "when one" or some other bullshit you would find in an actual dictionary
by The Forty Killer December 1, 2011
Get the ADHD typing mug.