NPA (National Pimp Association)Thong. Ladies be prepared to see jaws drop with our new sexy thong underwear! Every pair of our sexy thong panties feature a funny saying like this "NPA National Pimp Association" Thong. The perfect addition to any intimate outfit. Of course, they look incredible all by themselves as well.All of Gone Blue's thongs are Made in the USA from soft 100% cotton and are machine washable.