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.
by 11jadaway February 24, 2016
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...
Joe: I still have Vietnam war flashbacks of when she caught me staring at her huge tits...
by moldovaball January 31, 2018
A flashback about something probally traumatizing like the apple alarm going off when your best dreams are happening or the Vietnam war
by urban dictionary is 4chan February 09, 2022
by Hrpy/ I luv nedyaj March 20, 2022