A girl/woman that a boy/man makes up in order to impress other people or make them jealous. Usually someone he "meets" at a typical public place, ie camp, movies, Barnes & Noble, etc. by himself; "reveals" he had a past relationship with her; then tells about all the things he's "done" with her. It is important to note that a Miss Towers can be a real person that the boy/man actually DID have a past relationship with, a stranger, or just some random person who does not exist.

When you eat dirt for the first time and leave your family to build a shack in the woods