After the honeymoon, Tom was welding some stuff in the garage for fun.
His new wife was standing there by the bench watching him.
After a long period of silence... she finally said: "Honey, I've just
been thinking; now that we are married, maybe you don't need to spend
so much of your time out here in your garage and could consider
selling some of your machinery and stuff ... like your gun collection,
fishing gear, boat, and lose all those stupid model airplanes. And
sell that vintage hot rod sports car, and dump that home brewing kit"
Tom got a horrified look on his face and silently stared at her. She
said, "Darling, what's wrong?"
He replied, "Nothing ... but for a minute there, you were starting to
sound like my ex-wife."
"Ex-wife!?" she screamed, "YOU NEVER TOLD ME YOU WERE MARRIED BEFORE!"
Tom replied, I wasnt...

That was a good one Possum

It is also not as far fetched, as it sounds

Have a friend who has an old car, from way before they were married

His wife casually told him, that it was time to get rid of it, cluttering up the shed, etc

He casually told someone else, that he would part with his wife, before he sold his old car