Remus inspected Regulus' hand carefully as his lover turned it about, nodding when he was satisfied. "All right," he agreed, smiling at the brush of fingers.
"It would be nice to test the theory. But, let's not. Neither death nor a stay in the infirmary are really options I want to entertain seriously," he said with a huff. Some things were a little too risky for relieving their boredom. "And, considering Severus and Moody are two of the most paranoid people I've ever met? I wouldn't put it past them to have planned for just those scenarios. Just in case. Constant vigilence and all that." Remus laughed, botching the teasing imitation of Moody completely.
His laughter grew richer at Regulus' teasing. "Brave and reckless I leave to Pads. I was the cautious one, remember?" Holding out his hand, well away from the wall in case there was a range on the effects, he cast the spell and created a short pipe of solid air in his hand. "It can be in any shape you can picture, really. It's only limited by the caster's ability to visualise the shape they need. Moody likes fists and walls. I've used it to create stairs and quarterstaffs."