Pretty young nurse in RAF Hospital (Jeez!.. did we really have them in those days) gazing admiringly at bold, daring but damaged aviator..
" So,exactly how did you break your arm and leg?"
Hero replies..
"I fell off the mantlepiece in the Ante Room"
Surprised she asks...
" What on earth were you doing up there?"
Nonchalently ace replies....
"Trying to escape the idiot on the motor bike!"
Or variations on the theme.