When I was small and rode the schoolbus, some kid put his head out the window. Almost immediately the bus driver stomped on the brake, sending half of us out of our seats. He ran up out of his seat, pulled the kid up to the front seat of the bus and started giving us all a lecture. The whole thing from the head going out the window to the end of the lecture took around 6 minutes, making us late for school.

Don't stick your head out the window on buses!