I think my favorite fundoshi-related images to discover online are the intricate, painstakingly detailed and gloriously colorful images of full-body irezumi tattoo "suits." Frequently depicting scenes from traditional folklore, dragons, tigers, Buddhas, Shinto deities or imagery from the "floating world," irezumi tattooing (also known as horimono) is often kept secret by the wearer because of longstanding associations with criminality. Ironically, because of this association many criminals avoid tattoos, calling into question the validity of this stereotype.
A great deal of commitment and money is involved in tattooing at this magnitude, with the coloring and shading sometimes taking years to complete. And nothing displays an irezumi suit with dignity quite like a fundoshi. In fact, some wearers are tattooed while clad in only fundoshi -- except for when the tattoo artist needs to work on the areas that the fundoshi covers.