In an Instagram video, Armstrong is seen sitting in a car holding a cellphone with what appears to be the fake-news story about his death on the phone's screen.
He looks at the camera and shakes his head.
He also quoted Mark Twain:
"The rumors of my death are greatly exaggerated."
The fake-news story's headline reads: "BREAKING NEWS: Road racing cyclist Lance Armstrong has died."
The fake news quickly set the $4 reeling.