“Ask his mom if I can babysit him” is this not weird…?
Believe it or not, some uncles actually enjoy spending time with their nieces and nephews, and parents like to have a break from raising their children. It’s amazing what can happen when your family is barely functional
“not tonight. He broke both his arms so we’re going to spend quality time. How about tomorrow night?”
Why would it be? It’s your brother or sisters kid, should be extremely normal to babysit them. What’s in your mind that makes it weird?