codswallop

Definition

Slang

  • noun nonsense, worthless rubbish. A dismissive term, typically applied to something purporting to be true. There is more than one theory as to the origin of the word; the most fanciful is that it referred to the ‘wallop’ (gassy drink) produced by Mr. ‘Codd’ (inventor of a patent ginger-beer bottle). Alternatively, it may refer to the testicles (cods) as in balls.
http://www.dictionarycentral.com/definition/codswallop.html