Well, this one is a little late, Calvin actually said it before the apricot incident, but I forgot to get it written down!
We were going on nightly walks for a while, and when we walk by Hille's, their dogs bark furiously at us-for a long time! Since we come up to their house from the back and then loop all the way around it. So one night we were just about past, and after Greg and I had been shushing the dogs, Calvin says,"Dogs! Stop! Coughing!"
Apparently, bark in "dog" sounds like cough in "human" when you are two!