Thank you, @randyclemens At first, it's usually a look of confusion. Especially, when we are at the grocery store because all the wheels on all the carts set him off. It really looks like he's giving everyone a very emphatic "Hello", so most people start with a smile. My son is adorable. It's hard not to smile at him! haha! That smile turns to concern as they raise their gaze to meet mine, as if they are wondering if I know there is something off. Not everyone is sour about it, but you can always tell when they don't understand or aren't willing to try to understand.