Rhubarb
Rhubarb’s blah, blah, blah connotation has come about because the word contains no sharp or recognisable phonemes (an indivisible unit of sound). When spoken by a group it produces an indistinct background noise, hence rhubarb, rhubarb, rhubarb. So, when someone's talking nonsense about your cooking, hand them a mug of tea with Blah Bloody Blah.
