He told his girlfriend "I can't keep driving any more, the air hitting me in the chest is unbearable".
His girlfriend said "Try putting your jacket on back to front".
The boyfriend quickly made the change and they continued roaring down the road until the next bend! The boyfriend was going far too fast, lost control and the couple were both flung into a ditch.
A passing motorist stopped, rushed over to help, then ran to call the police.
The police telephone operator asked "Are they showing any signs of life?"
"Well" the motorist explained "the girl seems okay and her boyfriend was moving
Spoiler:
