I know it's not the Christmas season, but I remember this
joke:
Little Johnny is out riding on his shiny new bicycle on
Christmas day. When he comes to a stop at the lights, a policeman
on horseback draws up alongside.
"Young man, did Santa give you that bicycle for Christmas?" asks
the cop.
"Yeah, he did," Johnny replies
"Then send him a note asking why he didn't give you a helmet as
well." The policeman then issues Johnny a warning letter.
Johnny then asks, "Did Santa give you that pretty horse
too?"
The cop feels like humouring him and says, "Yeah, he did."
"Next time, kindly remind him not to put the asshole on the
horse's back."