Balderdash
Etymology
Of obscure origin, appearing in the late 16th century. Its earliest recorded sense was a jumbled, frothy mixture of liquids — milk and beer, or wine and water — and the modern meaning of "a senseless jumble of words" seems to have poured from that image of an unpalatable mix.
noun · /BALL-dur-dash/
Nonsense; senseless, empty talk or writing.
What it names
It gives a satisfying, dismissive name to talk that is not merely wrong but incoherent — a verbal wave of the hand.
Example
"Detox foot pads that pull toxins through your soles" is balderdash, and expensive balderdash at that.
Related idea
Balderdash and bunkum both name nonsense, but bunkum specifically implies insincere talk meant to impress or deceive, while balderdash can be merely muddled.