To be fair, Renkestuous had decided that climbing the cliffs in the nude wasn't smart. He had his underclothes on. There were parts of him that definitely needed protecting from the cliff, after all! But while Lumuth was napping - it wouldn't do to have her decide she needed to be his keeper, even for a few days until he was good for long enough that she forgot - Renkestuous decided it was time to see how far he could climb up the face of the cliffs. In (almost) the buff. Because if no one else was going to dare him to do things, then by the Shards, he'd dare himself!
Whistling to himself, Ren figured he'd made it a decent way up the side of the cliff without anybody noticing. There were plenty of available hand and footholds, after all, and why would anybody think to look for someone scaling the cliffs? And, sure, Renkestuous was anything but small, but all he'd really had to do was wear his clothes until he got to the base of the cliffs - acting completely nonchalant despite the vibrating excitement inside him - then strip down and start climbing.
He paused after a while, at least four or five times his height off the ground, to try to decide where his next handhold was. There had to be a good one up there somewhere ...