It's not just Anakin who is smeared in dirt and grease, his hair is in disarray, and grime under his nails. But he at least feels happy? "'k Mom!" And he's going to scoot off before that cheeky tone and smile can get him into trouble.

Or Garth'zel can notice hand prints far closer to the ceiling of the hold than a little boy should be.

Although once he's in the 'fresher, he's in there for a long time, reappearing clean and even his clothing mostly cleaned up.