Surprise Sibling

The humor comes from the unexpected and taboo realization that the person the speaker intended to engage with sexually is actually their half-brother, making the situation incestuous and awkward.

• Brother
• Friend
• Sex
• Incest
• Family
• Surprise

• So there I was, fucking my sister, and she shouts, "God, you fuck like Dad!" I then said, "Damn, that’s what Mom said."
• When you accidentally choke your girlfriend to death and then realize that it's your sister so who gives a f**k?
• What's better than sex with your 12 year old sister? Rolling her over and pretending it's your 10 year old brother.
• My sister's boyfriend is mad because I fucked his girl.