Captain underpats punctuation

"A class of children are sitting on the mat laughter." "This is me in kindergarten." "Says George" And this is me exclaims Harold.""George and I aren't friends yet."  "But we're about to be the teacher begins writing on the board." "And says." the seventh planet from the sun is called uranus George and Harold burst into laughter." The teacher quickly turns to glare at the boys.''Turning back to the board she says scientists George looks over to Harold." Ur.....Anus laughs Harold  I know... continues George laughing at Harold.'' ''The teacher turns and coughs hrmm hrmmm she continues speaing as she wites on the board.'' Know as a gas giant hahahahahah laugh the boys hystericully.''