Ah! Someone took the hint, I see.
Actually Kath, I was merely reading through this greatest of threads and dishing out rep hither and thither as it pleased me. This great Barrow-Downs institution is even better than I remembered it.
I think you might be interpreting the words of Samwise too literally. Perhaps Wargs did not invent captions, as such; but there has been a long-standing belief in certain circles of Wargology that Wargs did, in fact, rouse the humour-faculties in the race of men.
And that is even greater. Mark Twain, more than most, will have seen the value of that.