Little Jonny accidentally walked in on his mother in the bath, he asked her 'Mom, what is all that black stuff inbetween your legs?

His mother replied 'that's my sponge'.

A few days later, he walked in again, he noticed that there was no more black stuff. He asked kis mother what happened, she replied 'oh, i lost my sponge'.

another few days went past and little Jonny screamed 'Mom, MOM!' his mother, startled asked him 'what is it sweetie?' he replied 'i found your sponge, the woman next door is washing daddies face with it'.