DNA

1. The molecule being painstakingly sequenced during the Human Genome Project. This molecule contains all the instructions necessary to program an entire human being, starting from a single cell. 2. The abbreviation for "deoxyribonucleic acid," or "deoxyribose nucleic acid", the deabbreviations of which are misspelt by pretty much anyone who isn't a scientist, a science teacher, or a nerdy student obsessed with science (I'm in the latter category). 3. "Data Not Available" - This is used to duck questions in a "funny" way, especially by the people who don't pay attention in class, but want to sound smart(er than they really are?).