CELEBRITY
04/10/2014 01:05 pm ET Updated Apr 10, 2014

Watch Lindsay Lohan And David Letterman Prank Call Oprah

Oprah, is your refrigerator running?

Lindsay Lohan stopped by "Late Show" on Wednesday, April 9, and decided it would be a good idea to give Oprah a call on air. Though host David Letterman was initially hesitant, he quickly put on his best impersonation of Lohan's secretary, who apparently sounds just like Letterman speaking in a high voice, and talked to a confused Oprah.

Check out the whole clip above.

"Late Show With David Letterman" airs weeknights at 11:35 p.m. EDT on CBS.

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