A conversation with Parker

Parker: I'm doing 3+3+3 (equation that he had memorized from math video)
Rachel: What is 3+3+4? (A question he has yet to be asked.)
Parker: I'm doing 3+3+3=9!! (standard response when he doesn't know the answer)
Rachel: Ok, but after 3+3+3, what is 3+3+4?
Parker: (Short Pause)...uhhh, 10?
Rachel: yes! What is 3+3+2? (Also, completely new one to him)
Parker: (Without any pause but with giant smile) 8!
Rachel: (silently) God Damn.