h2g2 The Hitchhiker's Guide to the Galaxy: Earth Edition

There's a type of diagram used in some form of physics/CS/something involving black metal band tour T-shirts called a penguin for no better reason than the fact that the first diagram of that nature resembled one.
Biology is fairly bereft of interesting names, in-jokes or funny words. Sometimes a gene will be given a stupid name; more often they're stupid rather than funny. Genetics in particular is better at misappropriating proper words to confuse people reading instructions for a practical.

There is an unfortunate term used to describe a method of identifying organisms from their behaviour. It is JIZZ. For instance when identifying a bird it's jizz would consist of where you saw it, how it was feeding, the time of year etc. I heard of a story where an English bird watcher in America astounded a number of innocent bystanders by pronouncing that he could identify the bird they were looking at through binoculars by it's JIZZ. I think the Americans were suitably impressed.