Well, I mean, I guess it's more about the shape and the little shine added to it than what's truly anatomically sensible. No idea if this is the griffin-railing/tendertiels person.

If you squint real hard, the shape in front of its back legs looks vaguely dick shaped. which might be what oop was talking about. I guess they weren't specific about if they meant the front or the back of the back legs.