Made up shite insisted on by my father and uncle and made up by my grandad
“You’re farting like a barbers cat”
“Dad that doesnt make any sense you just made it up”
Breaking wind repeatedly and noisily.
Father's triple portion of baked beans washed down with half a crate of Mexican beer resulted in a terrific 'trumpet involuntary', and Mother complained that he was farting like the Barber's Cat.