I've never heard or seen this usage discussed, but it's not uncommon. It's sort of a reported question, found in very casual written communications. I don't think your version makes it any more legitimate.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Mr. TomShouldn't it be:Not exactly. You need:
...and if I thought that was possible.