A scale ranging from 1 to 3, measuring peepee lengths, 3 being massive and 2 being average. Nothing outside this scale exists, that would not be realistic.
“My peepee is a 3 on the Sanctusian Scale.”
“That is huge good for you mine is 2.”
“That’s okay 1 through 3 are all the sizes and yours is average mine is just enormous. Let’s high five.”