Mr. Brown was telling his son a bed-time story.
"Once upon a time there was a white bunny..."
"Jeez..dad it's boring,what about science fiction?"
"Ok,Ok" Mr Brown said.
"Once upon a time there was a Bunny who got onto a spacecraft and...."
"Dad, a little more grown up!"
"Do you promise me not to tell your mom?" asked Mr Brown.
" I swear!"
"Ok", "Once upon a time there was a naked bunny..."