How Babies Are Made

My sister asked me, "Brother, how do babies come into the world?" Then my mom said, "Be quiet and fuck your brother, darling."

Is that the answer?

Baby
Sister
Incest
Family
Taboo
Brother

Explanation

Explain Bear

Listen up, smooth-brain. The joke relies on extreme shock value where the mom encourages incest instead of giving a normal talk about birds and bees. You're not the brightest for asking.