Blueberries make such great ammo for throwing at my neighbors
Interesting choice of weaponry, most people tend to eat the blueberries.
The goal is not to hurt, the goal is to splatter and shock.
Well hopefully your victims don't hate blueberries now as they are really good at preventing heart disease and diabetes.
They smash against their clothes, these blueberries are not meant to be eaten.
Well after 6 months of age babies can enjoy smashed blueberries as a great nutritious snack. 
I have hit my share of babies in the neighborhood as well, they dont run as fast.
Yeah, crawling isn't as efficient as walking, especially if you're doing a belly, or command crawl. 
I ALSO love how blueberries taste. They are quite yummy
Adding blueberry extract to baked goods can give it that good blueberry flavor.