While Jason might understand it, Reggie wasn't as familiar with it. He had a lot of anger toward certain members of his family, but as long as he wasn't on the same continent as them (something he made sure about as often as possible), it didn't come up. These people he would have to deal with. He could only hide in his room so much, after all, and he was a social person on top of it.
He couldn't help but let out a chuckle when Jason asked if he was used to being the only hardheaded one in the group. He hadn't expected it, but the banter here was helping him calm down more than punching the bag, although that helped, too. "Maybe, although I'm pretty flexible when I want to be," he pointed out, taking another punch at the bag. At least with Jason holding it now, it wasn't as likely to come back flying at his head like before.