These are all synonyms for nonsense and are words me must start to use as often as possible. Preferably with no fewer and no more then two exclamation marks afterword. E.G. "Horse hockey!!" (yeah, that's a word)
balderdash, baloney, bull, bulldust, bunk, codswallop, drivel, gibberish, hogwash, hooey, horse hockey, malarkey, manure, poppycock, prattle, rhubarb, rubbish, twaddle