Sometime around 1990/91 Gareth Owen, a neighbour and young friend, was the first person ever to say to me 'May the Fourth be with you.' I remember it. It was hilarious.
After a while this became a good greeting and then after another while (say twenty years) people began to wish each other a happy Star Wars Day, having fun noting who didn't understand.
Today several people, without irony or attribution, have said 'May the Fourth be with you.' I think they have expected me to laugh. I honestly have no idea why.
They are closely related to the sorts of people, who wear comedy ties - I know a joke and I'm going to tell it all day (children's hospital surgeons are excluded from this group - they have other, more laudable, reasons).
The secret of good comedy is timing. A forty year old somebody-else's-joke is bad timing. Very bad. Stop it.