All the phrases we've given you are possible things that we might say aloud before correcting ourselves, but if you're looking for something that we might all say silently to ourselves in our heads, then there's isn't anything.
Originally Posted by Barb_D
Do you mean something like "Oh, silly me! Of course it's not 5,000 kilometers. It's 5,000 meters."
A: I ran 5,000 kilometers to day.
A: Oh, my bad. // Oops! // Oh, silly me! // Oh goodness! I meant 5,000 meters, of course!
B: That's more like it!
There are any number of things you could say there. I can't imagine a lumberjack would say "Silly me." I can't imagine an elderly man saying "My bad."
Thanks very much! That helps..