A sarcastic adverb, taken from 'probably', given in a response to mean 'no'. A take on the 'NOT' joke. It can also be denoted via a 'P' gesture made with the right hand. This can be in conjunction with saying the word, or alone.
A girl or woman, whether in media or one's personal life, that was the subject of a man's sexual fantasies during his formative years, usually from just before puberty to the end of puberty. Derived from proto, meaning primitive, and boner, meaning erection.