Sure, this is a darn-silly example for an argumentative topic, but at its core, the debate promotes a strong value-clash between what is SOCIALLY acceptable and LEGALLY acceptable. Socially, it might be distasteful to wear butt-hugging, genitalia-exposing materials, but legally, there is nothing from stopping you from doing so:

RESOLVED: Large, hairy individuals should not be encouraged to wear Speedos at Waikiki Beach or other public beaches.

PRO position;

CON position;