Wibble
British SlangDefinition
Nonsensical, incoherent babble; also used as an exclamation to mock panic or mental collapse.
Examples
"By the third pint he was spouting a load of wibble about aliens running the council."
"When the projector died five minutes before the pitch, she clutched her notes and squeaked, “Wibble!”"
"Stop wibbling, mate—it’s only a quiz, not the end of days."