Automotive terminology

The daughter asks her Dad, “Dad there is something that my boyfriend said to me, that I didn’t understand. He said that I have a beautiful chassis, lovely airbags and a fantastic bumper.”
Her Dad said, “You tell your boyfriend that if he opens your bonnet and tries to check your oil with his dipstick, I will tighten his nuts so hard that his headlights will pop out and he will start leaking out of his exhaust pipe!”

Good One!!