The arrogance of youth.

The old gent was backing his Rolls into the last available parking space when a zippy red sports car whipped in behind him to take the spot.

The young driver jumped out and said: "Sorry Pops, but you've got to be young and smart to do that." The old man ignored the remark and kept reversing until the Rolls had crunched the sports car into a crumpled heap.

"Sorry son, you've got to be old and rich to do that!"