Vietnam flashback 

A flashback about something probally traumatizing like the apple alarm going off when your best dreams are happening or the Vietnam war

im having Vietnam flashback from being jumscared by earape music

Vietnam flashback by urban dictionary is 4chan February 8, 2022

Vietnam Flashback Face 

When a person has a resting facial expression which is incredibly vacant and vaguely shocked. Suggesting the person is having a flashback to an experience had in the Vietnam War.

"Woah that guy looks scared."
"Nah, he's just got Vietnam flashback face."

Vietnam Flashback Face by 11jadaway August 31, 2016

Vietnam Flashbacks 

When you remember something traumatic, it seems like your back at war.

Person 1: “last night was so crazy”
Person 2: “I’m getting Vietnam flashbacks, it was so bad.”

Vietnam Flashbacks by Hrpy/ I luv nedyaj March 19, 2022

Vietnam war flashbacks 

A flashback of a traumatising or embarrassing memory.

Bob: Hey, remember our tenth grade geography teacher? She was so hot!

Joe: I still have Vietnam war flashbacks of when she caught me staring at her huge tits...

Vietnam war flashbacks by moldovaball January 31, 2018