Body Language

Several nights ago, Evan ate something that did not agree with him. Thankfully, he made it to the sink in time, despite the top-bunk stairs and various toy obstacles between his bed and the bathroom. He was better almost immediately, but at some point during the ordeal he complained this to Will:

E: My ribs are trying to tell me something.
W: What are they telling you?
E: I don't know. I don't understand body language.