Ugly sister jokes
My sister is so ugly that she had to have a child with me to keep the family tree going.
Your sister is so ugly, she made Hello Kitty say goodbye.
As a brother, I have to report my sister has a few new symptoms that are going around, and those symptoms are that she has big titties, a sweet pussy, and a great personality.
My sister 馃ぃ馃槀
Why is my sister so annoying? Because put your own thing in.
Sister.
Your sister is so ugly that she made an onion cry.
Q: I often think I'm ugly, but then I think of my sister and get over it.