A little boy comes into the kitchen one day and says to his mum "Granny's got a prawn!" The mother says "What on earth do you mean?" The boy takes his mother and shows her his granny, stark naked asleep on the sofa. He points to grandma's protruding clitoris and says "Granny's got a prawn!" His mother whispers "That's your grandmother's clitoris son!" To which the little boy replies..."Well it tastes like a prawn!".