Step Brother jokes

I was tickling my step brother's balls, and then it hit me: why is he laughing?

When I say, "Daddy," my stepbrother raises his head.

What did the stepbrother and stepsister do together?

Oof, mitosis!

A brother and a sister always got into fights. One day the brother tells the sister, "You're adopted!" The sister yells back, "At least they wanted me!"

Screw sister from a mister or brother from another mother. We besties from another testie.

My sister's boyfriend is mad at me because I fucked his girl.

Jack and Jill went up the hill to celebrate their marriage.

Nine months later, they happily had some use for their baby carriage.

Two years later, they went up again, then their daughter had a brother.

But one little secret that no one knew was that Jack and Jill share a mother.

I was raised an only child, which really pissed my brother.