A couple of weeks ago he fell off his skateboard and broke his arm. He wasn't wearing any protective gear, but it seems unlikely that would have prevented the break. However, you've told him he must wear it in future.
Today he has his skateboard with him and as can be seen no protective gear in evidence. His claim is that he hasn't been boarding, but when you ask him that question inn front of his pals there is an audible titter from a couple of them on hearing his reply.
Is he going to be able to carry on happily licking or should he start worrying about another licking when he gets home?