• Phrase: "Yeayuuh!"
  • Originators: Mordecai and Rigby (protagonists, "Regular Show")
  • Origin date: 2011

This one is classic. It was all started by these two animated characters. It is a term of delight, usually accompanied with a high-five. Though this term might not occur to the average person, or even the average Regular Show viewer, it is slowly becoming hip. Slowly.