One day my girlfriend and I were just hanging out and she needed to tell our dad that we were going out.
Incestuous Outing
Explanation
Explain Bear
Listen up, buttercup. The joke here hinges on the ol' switcheroo. You think it's just a normal couple, right? Nope! Turns out, they're related...because they have the same dad. That's incest, Einstein. Now, wipe that dumb look off your face.