Fish Pants

Why is that net in the bottom of some swimmers trunks for guys and not in the bottom of others? What purpose does it really serve? It is not like it is protecting my nuts from an impact or anything and its not keeping them secure. Hell it’s not even very comfortable. They way I figure it is there is a fishing net. The fish think my unmentionables is bate, so they swim into my shorts. Then they get tangled up in the net. So when I’m done swimming I have fresh fish to cook and eat.