It's a bathing cap. I just like to put a bathing cap.
5 seconds sound clip from the Good Morning, Vietnam movie soundboard.
You can hear this line at 01:25:51 in the Blu-ray version of the movie.
Quote context
[...]
- Look at this thing. A little Italian party favour there.
- Oh, no, Bozo, boys and girls.
- Look at this thing. Obviously, this is going like, Yeah, check it out.
- Hold on, how big is this thing? Hold on, how big is this?
- Black man's going, It's just for the tip. That's all I need is the tip.
- It's a bathing cap. I just like to put a bathing cap.
- Remember, this is the Vietnamese word Con Dum.
- There. Whoa, jeez, it almost blew up in my face.
- There's prophylactic everywhere, man.
[...]