A young primary school lad goes to talk with his Mum: "Mum? I've got a question. The guys at school are using words I don't understand." "What words, dear?" "Pussy and biatch." Mum inhaled sharply, but then said: "Oh, that's easy. A pussy is a cat, like our little Sooty. A biatch is a female dog, like our Sandy." "Thanks, Mum....." . He then went to ask his Dad for confirmation..... "Dad, the guys at school are using words I don't understand." "What words, son?" "Pussy and biatch. I asked Mum, but I don't think she told me the right meanings.” Dad said: "Son, never ask your mother about these things, ask me instead. Let me explain it like this." He pulled a Playboy magazine from his workbench, turned to the centerfold, drew a circle around the pubic area with a pen, and said: "Son, everything inside the circle is pussy." "Okay, Dads. Then what's a biatch?" Dad replied: "Everything outside the circle."