Watch: Ellen DeGeneres causes chaos on shopping trip with Michelle Obama

To prepare Michelle Obama for life after the White House, Ellen DeGeneres took the First Lady on an eventful shopping trip. The duo visited a local CVS pharmacy where the talk show host proceeded to cause a ruckus much to the embarrassment of the President's wife.

"This is not how you behave in a CVS!" declared Michelle, who was mortified to see Ellen using a backscratcher on an employee. "He liked it," quipped the Emmy winner.

Ellen and Michelle had trouble opening a box of wine.

From grabbing coupons to using an ATM machine and picking out Halloween candy, Ellen made sure Michelle was schooled on the ins and outs of shopping for everyday essentials. Things took a hilarious turn when the pair made it into the alcohol aisle. After encouraging Michelle to open some wine in a box, the duo served drinks to fellow customers. "You are not a good person to shop with!" said Michelle.

WATCH ELLEN AND BRITNEY SPEARS CAUSE CHAOS AT THE MALL

Just when the mother of two couldn't be more mortified, Ellen used a megaphone to ask for help in finding cream for Michelle's "rash."

It's gonna be a good day.

A photo posted by Ellen (@theellenshow) on

The LOL segment aired during Tuesday's (Sept. 13) episode which saw the First Lady acting as Ellen's co-host. The dynamic duo chatted about life, played games with NBA star Stephen Curry and posed for selfies with Bradley Cooper.

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