Two boa constrictors are slithering through the jungle, one of them is the mother of the other one, and they have a conversation. Baby snake..."Mum, are you sure that we are not poisonous?" Mummy snake... "Yes dear I`m positive" Baby snake..."Are you absolutely certain about that?" Mummy snake..."Yes, I`m sure. We wrap our bodies around our prey and kill them that way" Baby snake..."Thank heavens for that, I`ve just bit my tongue!"