I'm not addicted to brake fluid. I can stop whenever I want.

Behind the Groan

A Fluid Made for Stopping

“I can stop whenever I want” is a familiar denial of addiction. Brake fluid also helps a vehicle's braking system stop the car, so the reassurance becomes a claim about the product's normal purpose. Deliver the first sentence with exaggerated confidence, as though rejecting a serious accusation. Keep the second sentence calm and familiar. The joke works through the single word “stop,” so no imitation of drinking or other unsafe action is needed for the mechanical meaning to land.