hash collision

n. [from the techspeak] (var.: hash clash ) When used of people, signifies a
confusion in associative memory or imagination, especially a persistent one
(see thinko ). True story: One of us [ESR] was once on the phone with a
friend about to move out to Berkeley. When asked what he expected Berkeley
to be like, the friend replied: Well, I have this mental picture of naked
women throwing Molotov cocktails, but I think that's just a collision in my
hash tables. Compare hash bucket.