I snooped around my best friend's laptop and transferred pictures of them to my phone
Do you have a reason to need those pictures on your phone?
Yea, she's fat and I want to make fun of her for it
It's wrong to invade someone's privacy and steal their photos. You should immediately delete the photos you took. Your friend's feelings will be hurt when she finds out you intend to make fun of her.
I was just kind of bored. It was fun for me.
I still think that you should delete those pictures! It is wrong to steal from people that you consider your friends. Even more so if you intend to make fun of them by using those pictures!