Watch Lindsay Lohan And David Letterman Prank Call Oprah

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

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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