An upperclassmen female who dates or has a relationship with an underclassman. A two plus grade difference between the couple.
A freshmen and a junior girl. (the primary example)
A freshmen and a senior girl.
A sophomore and a senior.
Me: Wow, what is up with these bobcats prowling the freshmen-sophomore hallways?
Everyone else: IDFK, rite?! LOLZ WIERD