And now... dragon-hide thongs!
"What are these, Potter?" Snape enquired.
Harry grinned. "Well, you said you wanted to try dragon-hide thongs."
Snape gave him an exasperated look. "Thongs in the bondage sense, Potter, not underwear." He picked up the offending garments and looked at them thoughtfully. "Surely the scales would be rather... chafing?"
"Nah, they've got this special softening charm on them," Harry said, enthusiastically changing into his thong. "See? Really comfy. Going to wear yours?"
"Softening?" said Snape, raising an eyebrow. "Not what I had in mind."
"Silly," Harry said affectionately. "The charm won't affect ME. Look!"