—Girls
From The Extended Group
A —girl is a moniker given as reference to a particular girl someone in the group encountered, is interested in, or is individually acquainted with. An arbitrary quality of the person (or circumstance of the encounter) usually becomes the first syllable of the pseudonym, with "girl" following as the suffix. Hence, a girl sitting in front of you in your biochemistry class might become "biochemgirl."
Motivation for using this cryptic designation may range from a desire to keep the person's identity secret to a lack of knowledge of the said female's actual name. Often this is done simply for the sake of having a collective reference point for discussing girls who are only rarely encountered.
The —girl identifier is an example of one of the many Seinfeld parallels in group behavior.
Origin
It is unclear exactly when this naming system was first utilized, but most accounts point to the donning of Busgirl by Jamie as the genesis of the —girl classification. Because of this, Jamie in particular has become associated with the "girl" suffix, though since college the term is perhaps equally descriptive of Andy's approach in romantic pursuits.
