I found out on Easter that hitting things with bats is programmed into boy DNA. Despite the brisk weather, we had a picnic at the park with B's family (the ONLY reason we did this was because his brother and sister-in-law, whom we don't see enough of, were in town), and the kids' aunt and uncle brought a scary bunny pinata.
We brought a bat for the pinata, and as soon as Campbell got his little hands on the bat, he was looking for things to whack. He bee-lined for the pinata and started swinging, yelling, "Go! Go!" every time he did. It was both funny and frightening. I forsee lots of bat swinging and broken windows and injured sisters in his future.
It took both girls to pry the bat away from Campbell when it was their turn to hit the pinata. After it finally broke, we left it hanging in the tree for Campbell to continue swinging at.