Well kiddo, have you seen how sheep follow their shepherd wherever he goes? They just follow him blindly without any questioning or thinking. When someone says "like sheep to the slaughter," it means they are talking about people who are following someone or something blindly without any questioning or thinking, just like sheep follow their shepherd. In this case, it usually means people are being led to a bad situation or danger without even realizing it. It's not good to be like sheep to the slaughter because we should always question and think for ourselves to stay safe and make good decisions.