Bad Cough?

Today, while shopping, Josh was in his stroller and I thought I heard him cough, however, it didn't sound like his "normal" cough. As the day went on he randomly continued to do it. We went to my cousin Amanda's graduation party today (congrats Amanda) and Nana would look and Josh and ask "do you have a bad cough?", and cough in front of him. He then would cough back and laugh. That's his new trick! Too cute and very funny.