An act of drinking 6 double shots of russian vodka, in quick succession. hence why it is called 'soviet suicide' gaurenteed to get you wankered and make you feel a tad ill in the morning. by a tad ill i mean emptying your guts into the nearest toilet bowl provided you get there. for the true soviet exprience however finish the bottle off and blow your brains out with a revolver in the style of a shamed soviet general.
"my friend is a moron he just drunk a soviet suicide, that's gonna hurt tommorow mate"