Simply put, it is the Cock of a gamer. Typically covered in smegma due to the lack of showers and covered in pubic in hair due to in a lack of shaving. They are typically 4.20 to 6.9 inches in length.
Gamer 1: I am insecure about my Peepee
Gamer2: Why bro?
Gamer1: I have a Gamer Cock