Spotted...

reminds me of a joke

This mother superior and her little nuns were out bike riding.
At the first speed bump all the little nuns start to giggle, and peddle a little harder.
At the second they giggle harder and peddle harder.
At the third they start to groan and peddle harder.
At the fourth with much groaning, moaning and sweating as well and some very hard peddling.
The mother superior turns around and says "stop all that or you'll have to put the seats back on!!!"