syntinen wrote:The trouble with this explanation of "codswallop" is that there is no evidence - none whatsoever - that it was ever used in relation to drinks bottled in Hiram Codd's bottles. or indeed that the word existed at all until a generation after the Codd bottle had gone out of use. The first sighting of the word dates from 1963!
In other words, this is an urban legend.
Not to split hairs, but the word was used in a British radio programme back in 1959, by a famous comedian and writer named Tony Hancock. He would almost certainly have been using common language of the day, so there's a very good chance that the word would have been very familiar to the radio listeners, which would mean that it had been in common usage for quite a few years.