take a pair of boxer briefs, cut off the legs, and cut a triangle in the back. just look at a picture of a jockstrap to get the shape completely right.
take a pair of y fronts and cut half way from th waist downwards then get two pieces of elastic and stitch it to the sides
in my mind you could be six and make out with somebody
any age...for it to be offical you have to have witnesses and maybe a lawyer, but I'm not sure about the lawyer.
maybe or maybe not