Johnny's bike (adult?)

On Christmas morning a cop on horseback is sitting at a traffic light, and next to him is Little Johnny on his shiny new bike. The cop says to the Little Johnny, "Nice bike you got there. Did Santa bring that to you?"

Little Johnny replies, "Yeah."

The cop says, "Well, next year tell Santa to put a tail-light on that bike."

The cop then proceeds to issue the kid a £20.00 bicycle safety violation ticket.

Little Johnny takes the ticket and before he rides off says, "By the way, that's a nice horse you got there. Did Santa bring that to you?"

Humoring Little Johnny, the cop says, "Yeah, he sure did."

Little Johnny continued, "Well, next year tell Santa to put the dick underneath the horse, instead of on top."