A Canadian journalist asked me how to visit Paris with teenagers. So I found out. Find some steps, a curb or grass to sit on in the afternoon. Bring a skateboard ( or longboard) to Paris and map out a city journey or practice session. Plan a picnic on a quai along the Seine or go on a bike tour. Run around the Louvre on a treasure hunt. Buy manga books or Goth and Lolita-style clothing in the Bastille area. Go shopping at any of the Paris malls or second-hand stores or go to a can-can show or how about that scary mansion in the tenth arrondissement on rue de…