Laurel portrays a commercial traveller, hawking a patent medicine cried Professor I.O. Dine's Knox-All: that name is the funniest joke in this movie, which ain't sayin' much. I should point out that this movie dates from 1923, the shank of Prohibition. During Prohibition, quite a lot of Americans purchased patent medicine if it had (ahem!) 'medicinal' properties, so -- if Knox-All contains alcohol.
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