An ultrasub is someone who is extremely submissive during sexual intimacy. In order to bear the title of "ultrasub", you must obtain a body count greater than three and you must score at least 98 percent in the two of the following BDSM categories: Submissive, Rope Bunny, Masochist, or Brat.
Kid A: I want a girl who will let me tie her up and do whatever I want.
Kid B: Just say you want an ultrasub.
Kid B: Just say you want an ultrasub.
by Definitions With Class September 14, 2021