Sir, the private believes that any answer he gives will be wrong and the senior drill instructor will beat him harder if he reverses himself, sir.
10 seconds sound clip from the Jaws (1975) movie soundboard.
You can hear this line at 00:18:44 in the Blu-ray version of the movie.
Quote context
[...]
- Now, you do love the Virgin Mary, don't you?
- Private Joker, are you trying to offend me?
- Who's your squad leader, scumbag?
- Sir, the private's squad leader is Private Snowball, sir.
- Sir, Private Snowball reporting as ordered, sir.
[...]