He did a very off-color parody of former VP Nixon.
6 seconds sound clip from the Good Morning, Vietnam movie soundboard.
You can hear this line at 00:59:51 in the Blu-ray version of the movie.
Quote context
[...]
- We simply need to consider taking him off the air.
- Lieutenant, we get hundreds, maybe thousands of calls and letters each week. Fan mail.
- He's the first man in the history of Armed Forces Radio to get fan mail.
- Sir, the man has got an irreverent tendency.
- He did a very off-color parody of former VP Nixon.
- Respectfully, sir, the former VP is a good man and a decent man.
- He lugs a trainload of shit behind him that would fertilize the Sinai.
[...]