How does your cavapoo communicate with you?

I figured mine does this very overly correct sitting pose when he wants out. The other day his stomach went bad, he sat in front of me staring at me and I didn’t quite get it, but then he had an accident inside which wasn’t his fault, poor guy had diarrhea. But this sitting thing is kinda funny cause it looks like a pose for a yearbook photo. A weird cue though.