A little boy walks in on his mom getting out of the shower,and pointing to her mound of pubic hair asks,"what's that"?

The mom,thinking quickly replies "that's my black sponge".

This seems to satify the boy and he runs off to play. Later that evening the mom is cooking and the boy asks her "mommy,can I see your black sponge again"?

The mom,thinking quickly once again replies " no dear,I...lost it". The boy runs off to play again.

A few minutes go by when the boy comes running back to her exclaiming "mommy!mommy! I found your black sponge! Mrs. Jones next door is washing daddy's face with it!