Driving me mad.
Whilst driving I have a habit of adding up all the numbers on the road signs; distances, road numbers etc.

Even on stretches of road that I know well (ie A563, A46, A52,A452,M1, M69 etc) and I know full well what the total is before I get to the sign because I've added up the numbers hundreds of times before I will still do it.
(Barnetboy, Mon 19 Dec 2011, 16:17, 3 replies)

If I ever get work at the Department of Transport (or whoever names roads)
I shall encourage them to name roads the "A35465429" or the "B12*42/3 to the power of root 63", specifically to stop/encourage this sort of thing.
(sabre-tooth monkey, Mon 19 Dec 2011, 17:10, closed)

Far from it....
I relish the challenge.
(Barnetboy, Mon 19 Dec 2011, 17:43, closed)

I do this!
And also I add up the digits on car number plates. On bad days I add up the letters too (A=1, B=2, etc). I once visited Jersey, where the license plates are a simple string of numbers, and nearly had a fit.
(a gun that fires other, smaller guns full of jizz, Tue 20 Dec 2011, 0:41, closed)