Last time it happened, back in April 2010, I chalked it up to abrasive grit in the eye. This time out, I didn't notice it until someone told me I had blood in my eye. I thought they meant I was angry. No they meant blood in my eye. Now it itches. Might be pink eye this time. So, probably pink eye the last time as well.
Welcome to my memory hut.
The term "random walk" is attributed to Karl Pearson, through a 1905 letter exchange in the journal Nature. It describes the path of a hypothetical drunkard. Since I drink now, I suppose that description fits me as well as any other. Other than that, I'm a Northern Barbarian, slightly above average.