I'm thinking of driving while I'm feeling sleepy, so I might cause an accident.
That is unsafe. Are you thinking of really driving while you are tired?
Yes, I want to harm someone else on the road.
It can be very dangerous if you fall asleep at the wheel and hurt or kill someone. You should take a nap or call a ride share if you cannot drive safely.
I'm going to do it and then lie about it. They will never know.
It is important that you don't get on the road when you are tired and just accept that you need some rest. If you cannot drive safely or won't drive in a safe manner, then you can expect to lose your license at some point.