The comedic skit, which aired Wednesday on Ellen, featured the actor with an injured arm that was elevated from being put into an elaborate cast.
With DeGeneres in his ear telling him what to say, Harris approached a fellow shopper and asked him for help in opening and drinking a variety of flavors from carbonated beverage Bubly.
DeGeneres made things awkward for Harris as she told the Series of Unfortunate Events star to invite his new friend to the party and to hype up and share a made-up story involving Celine Dion and her children that the daytime host never had Harris finish.
DeGeneres then allowed Harris to tell the shopper the truth after he had helped pour Bubly into Harris' mouth. "Want to see a magic trick? Wanna be on The Ellen DeGeneres Show? Harris asked the customer. "Poof! Here you are, you're on it."