I was finishing the thumb on my last mitten. And then it dawned on me I had made two LEFT mittens instead of one left and one right.
Some time has passed, so now it's a little funny, but at the time I was not happy at all. Sean was trying really hard not to laugh. Good thing I'll have enough yarn for two more right mittens. Also, good thing my mom was admiring my mittens so much. She'll probably be getting the second pair.
Now, to keep working on the RIGHT mittens.