Biden simultaneously declined to take a test and demonstrated what the results of that test would be.
The heated exchange happened during an interview with CBS correspondent Errol Barnett who asked Biden to clarify if he had taken a test to measure his mental acuity.
“No, I haven’t taken a test. Why the hell would I take a test?” a defensive Biden asked.
“Come on, man. That’s like saying to you, before you got on this program, if you had to take a test where you’re taking cocaine or not. What do you think, huh? Are you a junkie?”