Like beast, but te opposite. If something is completely and utterly gay, it is Yeast or Yeasty. Derived from Yeast Infection
by Senor Ikea July 21, 2010
Like a douchebag is a bag of douche or literally the device used to clean the womans genitals, a derpbag is a whole bag of derp.
by Senor Ikea July 21, 2010