Merriam-Webster took a survey to identify the words that are not yet in the dictionary but are extremely popular among linguists and the like.
1. ginormous (adj): bigger than gigantic and bigger than enormous
2. confuzzled (adj): confused and puzzled at the same time
3. woot (interj): an exclamation of joy or excitement
4. chillax (v): chill out/relax, hang out with friends
5. cognitive displaysia (n): the feeling you have before you even leave the house that you are going to forget something and not remember it until you’re on the highway
6. gription (n): the purchase gained by friction: “My car needs new tires because the old ones have lost their gription.”
7. phonecrastinate (v): to put off answering the phone until caller ID displays the incoming name and number
8. slickery (adj): having a surface that is wet and icy
9. snirt (n): snow that is dirty, often seen by the side of roads and parking lots that have been plowed
10. lingweenie (n): a person incapable of producing neologisms
Hmmm. What about Assclown?