hmmm... why are there some pictures in which dribble & spitz from warioware measure their penises and then they compare their penis size and spitz's penis is bigger than dribble's penis? im just asking~

here are some brief evidences:
https://e621.net/posts/3107593
https://e621.net/posts/1937690

It's called a "trope", or a tendency for a certain type of thing to happen. A smaller character having a bigger penis is one such trope.