Just to back up what MrsNops said (like she needs backup)...I too used to tend to deal with our sitch with a sense of humor, it's my natural persona to do that, as you said (I say this all the time too) it's better than crying.
Especially during this last year though I have realized exactly what you and MrsNOps said, he didn't take me really seriously when I'd make a joke about it. Now, I don't. I either just look at him and don't say anything, or say something like "whatever", "prove it", or "I'll believe it when it happens." I don't say it in a joking manner either.
Just the mere fact that I don't make light of it anymore has at least seemed to give some gravity to the situation for him.