Not an OCD - I don't bother if the location is inconvenient, but I sometimes split the Skittles into batches, each batch having one of each colour. Eat the remainder. Then, shut eyes and take from a batch. Keep eyes closed until I've guessed the colour by taste alone. Check against remaining colours in the batch.

Its surprisingly difficult, espesh if you haven't rinsed the previous flavour(s) out. Nigh on impossible with Skittle Sours.
(J H Christ began in Afrika ka ka ka ka, Fri 16 Dec 2011, 5:25, Reply)