Those kindergartners would go home saying "I fucked your mom...."
And when that happens, you know you've done a good job.
All kidding aside, when I was young I had a fear of speaking in front of large groups so I knew I'd never want to be a teacher. Later that fear went away when I had to run a large staff. Had I known at a young age its not really that bad, I might have taken the teacher route. My kids even said I should have been a teacher.