This is the final appearance of John Burns on the show.
The word given to Jason in the first round of the spelling bee is "phosphorus". He goes on to spell it "p-h-o-s-p-h-o-r-o-u-s". This would be incorrect if referring to the chemical element; however, "phosphorous" with the "-ous" ending is an adjective meaning "relating to or containing phosphorus." Since no definition or usage was specified, either spelling of the word would have to be considered proper.