Well, I'll let you into the secret, Joe had to go through life with "Available to rent" tattooed on his chest. :)
Nah, the police raid the tattoo parlour and find Joe on the table, and Frank on a nearby couch, and Joe is unharmed apart from Blackbeard having pricked out the design on his chest, but hadn't got around to the dye part. Blackbeard and his swarthy assistant escape, though later they do manage to corner the boys again, and then we have this... interesting passage;
He arose, picked up a small carved chest from a table, brought it before his captives, and opened the lid. Frank and Joe got a strong whiff of a sweet, sickening incense.
"Just to make you peaceful," said the pirate, closing the lid.
Fearing they would be overcome by the strange odor, the brothers dodged to the other side of the room. What would this fiend attempt next?
"I have a story to tell you," Blackbeard grinned. "But first you must be in the proper mood. Don't try to get away, my lads."
He followed them, carrying the chest. The boys wondered if they should tackle the two men before they had a chance to execute some dire plan. Frank and Joe realized they might be tattooed with the Curse of the Caribbees, or become the victims of some other awful scheme of these pirates.
"Let's fight 'em!" Joe urged his brother. But neither he nor Frank had the power to do so. Suddenly their muscles seemed to become paralyzed. Slowly they sank to the floor.
Lopez propped the Hardy boys against the wall. They had never felt so queer before in their lives; their minds functioning normally, their bodies useless.
Sorry, I shouldn't snicker, considering the age this was written in, but even so! :) (Oh, and don't worry, they are saved again by the Police, and the effects of the narcotic incense is only temporary... for shame!)