A currently popular pattern of insult humor is the Full Deckism, named from the cliche, He's not playing with a full deck.

Don't switch it on yet – wait until I've reconnected the pump.

The taste and digestion are often depraved, anorexia, nausea, inappetence and vomiting supervene, the woman desires innutritious or disgusting food, such as chalk, cinders, putrescent animal food, […]

I released the brakes, smashed the clutch and switched the transmission case into low gear, then put the pedal to the metal again throwing the car into what is known as a “moonshine spin”.