"Ruf" - Made-up word my English class came up with. It's supposed to mean "cool," and we're competing with another English class to see which word can get around the school faster. We came up with the word in November, and I haven't heard anybody say it. It's pronounced like the word "roof."
"W'ever" - Anybody who watches Kappa Mikey will understand this. He says this instead of "Whatever." I say it to my sister, and she gets really annoyed with me whenever I say it.