I'm thinking of jumping in a stranger's car and driving it away.
That sounds illegal. Are you sure you want to do that?
Yes, I'm going to do it for sure.
That would be stealing and a serious crime. You would make a criminal of yourself by doing this, I think you should suppress such urges.
Suck my dick. I'm going to do it for sure.
If you don't want to go to jail, give up on your thoughts. Focus on doing something productive instead of stealing cars.