When someone is passed out usually drunk and wakes up to someone else diarrheaing on their face.
Man, I should kick Carls ass for giving me that Good Morning Vietnam, that was just gross.
by Timmy Techno September 15, 2010
1 more definition
When a woman is about to perform felatio on you, let your rigid member be pulled down till it is parallel with your legs by the waistband of your shorts. Once the shorts are off enough to permit it, let the dick fly up and bash her in the nose, ideally drawing blood. When this happens, yell out "GOOOOOOOOOOD MORNING VIETNAAAAAAAAAAAAAAAAAAAAAM"
The date was going pretty well till we went back to my place and I gave her the good morning vietnam
by roto March 28, 2004