The human mouth is one of the dirtiest places in the body, filled as it is with food and airborne pathogens and all manner of nasty things that fly around in the air on a daily basis. But not you. Your mouth is always -- [i]always[/i] -- minty fresh. Your mouth is clean constantly, and it is so clean because microorganisms can't survive in your there. Anything that enters your mouth is eventually consumed and broken down into nothing, leaving nothing behind but the refreshing scent of mint. Your saliva is the world's strongest antibiotic, and using it, you can eventually cure any disease.

I once created a joke superhero who had the ability to teleport his arms, but no other part of his body and only within his line of sight. Try me.