Fred has violent sneezing caused by an allergy. To stop the sneezing, he goes to the drug store for a bottle of "Scram." Each such pill stops a fit of sneezing, but has the side effect of turning Fred temporarily into an ape.
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[after visiting the pharmacy, Fred & Barney stop at a restaurant. Fred tells Barney that he should call home to let them know where they are. Barney agrees, but before he can get up Fred sneezes, sending Barney flying into the phone booth
You don't have to get pushy, Fred! I said I'd call!