Michael J. Fox "can't stop laughing" at the symptoms of his Parkinson's disease.
The Back to the Future actor - who was diagnosed with the condition in 1991 - admits he always sees the funny side of the tremors he experiences, particularly when he's trying to do something kind like make coffee for his wife Tracy Pollan.
He told AARP The Magazine: "The truth is that on most days, there comes a point where I literally can't stop laughing at my own symptoms.
Michael J. Fox and wife Tracy Pollan attend a New York Knicks game. Photo / Getty
"Which is why I keep a very stiff pair of shoes on the floor next to my bed."
Michael went public with his diagnosis in 1998 and he admits he eventually started to laugh at the way people looked at him with "dread".
He said: "It was easy for me to tune in to the way other people were looking into my eyes and seeing their own fear reflected back.
"I'd assure them that 'I'm doing great' -- because I was.
"After a while, the disconnect between the way I felt and the dread people were projecting just seemed, you know, funny."
Actor Michael J. Fox and wife Tracy Pollan attend the 2017 Vanity Fair Oscar Party. Photo / Getty
The former Good Wife actor recalled being reduced to tears when boxing legend and fellow Parkinson's sufferer Muhammad Ali - who died last year - called him to offer reassurance about their shared battle.
He said: "In this raspy, paper-thin voice, he said, 'Aahhhhh ... Michael, now that you're in it, we'll win this fight.'
"What could I say? Sitting there alone listening to Muhammad Ali, this giant -- I was welling up, almost openly weeping."
