'The Parent Trap' is an undoubted classic, but most of us will be familiar with the 1998 remake rather than the original from 1961.
So when 65-year-old Quaid revealed news of his engagement to 26-year-old PhD student Laura Savoie, his 'Parent Trap' co-star Elaine Hendrix - who played the aforementioned fiancee - couldn't help getting involved.
Considering her quip has already been liked over a quarter of a million times, it's fair to say that it went down well with the Twitter audience.
The best part of all? Quaid really is the father of 11-year-old twins (although they're a boy and a girl, Thomas and Zoe) with his third ex-wife Kimberley Buffington.
He revealed the details of his proposal to Savoie to Extra, saying: "It happened on the very northernmost point of Oahu, at Turtle Bay. It was kind of spontaneous. It was very much a surprise.
"I had the ring in my pocket… It has been kind of a month-and-a-half plan… I wanted it to be private. She was actually taking a selfie of us, and I put the ring in front and said, "Will you marry me?" — and then she fell down.'"
A case of life imitating art? We shall see... but congrats to the happy couple, of course. 'Fourth time lucky', as the saying goes...