Rex was a little taken back by the bit about the danger of him towards the children. "Why would I be a danger towards the children in anyway, I want to help protect them not harm them. What makes you think I would hurt them." He replies, sounding quite offended. He was willing to accept that Verona was a mother and she wouldn't be a 100% like she was when they  were kids but not the last thing she said. "Also you weren't stupid when we were kids, just because we played around and had fun doesn't make us stupid, we were just being kids." He excalims.