Otter Girl 

An elusive bitchy girlfriend of whom tales are told and pictures may be shown of but will never be seen in person by the friends of the boyfriend. A girl who is as elusive as an otter.

Sarah was Nick's Otter Girl, cause Nick never let her meet his friends

Otter Girl by Cigar Gator September 24, 2016

OtherGirl 

Girls who don't just fit into one definition or social group, they fut into more then one.

"See her she's a goth and a geek she's an othergirl"

OtherGirl by courtrose88 October 3, 2016