Would this be wierd?????????

Im 19, i moved out of my mom's but I live with my 60 year old dad, It's his ld house but he put it under my name so i ay the bills and it's my place...anyway, My sister who is 32, has a husband and 2 kids and I want to see them often, we usually have BBq at my house for the games and my little niece and Nephew will come sleep at my house and Swim in my pool and stuff, but would it be wierd if I went sleep over at my sisters house for a night? I mean Im an adult, and my friends will sometimes crash at my place if they had too much to drink, but anyway, would it be wierd if I slept over at my sisters place for a night??