From the Vintage Brit site:
Bicycle Erotica -
» BICYCLE EROTICA The Online Bicycle Museum
A VINTAGE BICYCLE JOKE
A vintage bicycle enthusiast was out for a walk when he met a fellow vintage bike enthusiast who was riding toward him on a wonderful old bicycle.
The first vintage enthusiast was stunned. ‘Where did you get that fantastic machine?’ he asked.
‘You’ll never believe it,’ said the second enthusiast. ‘I was walking home yesterday, minding my own business, when a beautiful woman rode up to me on this bike. She threw the bike onto the ground, took all her clothes off, and said: ‘Take what you want.’
The first vintage enthusiast nodded approvingly. ‘Good choice …her clothes probably wouldn’t have fitted you anyway.’