B. a tooth inside of your vagina; there is only one
C. weirdly shaped vagina with a tooth
2. (verb) when your vagina tooth latches onto long things, such as penises, and bites it repeatedly without your control
2. My vagina was nussing like crazy last night. It latched onto my mom's broom and i had to sit there for about two hours while it bit it.
Nowadays: "Ahh man, this totally sucks nuss".