Howard fell off from shopping car

Ba Ba took Howard shopping at Wal Mart. Suddently the phone ringed and I picked it up. The first word ba ba said was " we should watch Howard more closely." The first thing came to my mine was that he messed things up in Mal Mart. "What''s wrong" I asked. "He fell off from the shopping car and his rear head hit on the ground. He sat in the car when I checked out. I did not notice that he stood up in the car later. As I finished I pulled the car ready to go and he just fell off." My God,I could imagine what was the picture when he fell. "Is he ok?" I asked. "He cried loudly but he looked ok now" I did not blame my husband, I just told him " pay more attention on him, you know he is naughty, he does not behave himself, parents are responsible for that." Wal Mart''s staff said if we want we could report it. It was our fault, no necessary to report Wal Mart. When they came back,Howard was back to be naughty. In the next day we shopped in a glocery store, he did it again (trying to stand up on the shopping cart), totally forgot the pain of yesterday.