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 August 31, 2016
 Get the Vietnam Flashback Facemug.
Get the Vietnam Flashback Facemug. 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
 Get the Vietnam war flashbacksmug.
Get the Vietnam war flashbacksmug. 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 8, 2022
 Get the Vietnam flashbackmug.
Get the Vietnam flashbackmug. by Hrpy/ I luv nedyaj March 19, 2022
 Get the Vietnam Flashbacksmug.
Get the Vietnam Flashbacksmug.