Old Sequoia (1945)
[Donald answers the phone]
Donald's boss: How is old Sequoia coming?
[Donald looks around to see the big tree falling towards him]
Donald Duck: [nervously] Heh-heh... coming fine.
Donald's boss: [on phone] Are you keeping an eye on Old Sequoia?
Donald Duck: Y-yes, sir.
Donald's boss: Well, what are you doing on this phone? Get out there and watch Old Sequoia!
Donald Duck: [listening to the beavers inside Old Sequoia] Uh-oh, looks like an inside job.