Erik chose not to answer her question, and rolled his eyes at her comment, but he was smirking, too. His smirk widened into a grin to contest her expression when she held up the shells. If he hadn't seen the tail first, it might not have occurred to him, but he put two and two together fairly quickly.
"Those-" He reached out, taking the shells and delicately placing them in front of her breasts. "Go here." The look on his face wasn't unlike the one on hers when she held the loin cloth up to him. "And I believe they go with that tail."
So clearly they had some unacceptable options, but they also had a third option. Erik's was a lightweight, baggy white shirt with a pair of bell-bottom jeans, an assortment of jewelry and accessories, and a wig. Judith's was a light, summery looking dress with the same kinds of accessories as his. He recognized the context immediately.