Gym turtle
A gym turtle is one of those big guys who can probably lift 200lbs, usually bald... although some of them try to disguise themselves by letting their hair grow a bit, but you can still tell they are turtles because they wear their shells in the front, right below their chest and above their waist instead of having it in the back like a normal turtle, most of them are proud of their shells because it helps them lift more weight instead of working on their abs. even though they look menacing, most of them are friendly, but it's always good to be cautious around them.
J: hey dude, look at that gym turtle over there bench pressing 300lbs.
S: yeah, i know, good thing he has his shell or else he would get a hernia.
J: yeah, that shell sure comes in handy.