[Gee whiz, Wan, can't you take a hint to just play along with the joke? Just stop replying or buy into it, one! Of course, Sokka won't be the one to give in because, well, reasons...]

Of course I didn't hit my head on anything! And even if I did, I have a head that's practically made of steel! Don't you know that Fire Nation citizens are some of the toughest, meanest stuff in the entire world!? Why, in my day when I was in the army, I had to do run miles while carrying a pig in my arms. I had to do push-ups with that same pig on my back. [Unsaid is the fact that it was because he had gotten into big trouble.] A simple blow to my head wouldn't be enough to wipe my memory, boy!