A cute furry purring sensitive agricultural infection. Resembles a cross between an AngoraCat and a BeanBag.
(When CommanderSpock estimated the number of tribbles in the granary in the StarTrekOriginalSeries, has anyone ever checked his math?)
Yes, I did, back in the day. 1,771,561 is 11^6. One tribble has 10 offspring, and each of them has 10 and so on... - Patrick Connors