saying No to dad

I don't know why but I feel weird when I see my father wearing my shirt...yeah, I know I don't want the shirt but seeing my father wear it, I start getting upset "Why is he wearing my shirt?"

My father wanted to use my laptop to watch youtube. Actually I don't want to let him but it wouldn't be nice to decline...unwillingly I let him use it but under my brother's supervision.

I guess I just don't feel comfortable letting my father use anything that's mine or used to be mine. I'm totally okay if my mom, or siblings wants to use my things...but when it comes to my father, I really feel reluctant and uncomfortable.

LoL, perhaps not a good advice, I might hurt his feelings...