Regulus gave a little sound of surprise when Lucius grabbed him around the waist and pulled him close to keep him from tumbling over himself to the ground. When he realized who had a hold of him, he looked up at Lucius and grinned. "Thank you Lucius. Very sporting of you." he said trying to be his usual, eloquent self, but he was speaking in a slightly slurred manner. Without really thinking about it, he slid his arm around Lucius' waist, then turned to look back at Rabastan, Rodolphus and the things occurring there.
When he saw that Rabastan was going to strip down along with the others. Regulus put his right hand, and two fingers to his mouth and gave a shrill 'wolf whistle' as the boys shed clothing and either tossed them to friends, or set them down. He giggled after whistling, and glanced up at Lucius, then back to Rabastan and the other new members. "This is going to be GREAT!" he said with a wide grin.