Who Is Driving This Bike

Who is driving this bike? Someone yelled in a scream. Animals were falling off in all directions, this was some dream! We will probably stop after we crash into something I said. We were all giggling uncontrollably, our faces were red. We are making great time! Yelled a mouse or a mole. Then of course we went flying for we had hit a hole. Who was driving that bike? We all asked each other. Laughing like hyenas who had gobsmacked their mother.