The act of winning a 4-life Super Smash Bros. match without losing any lives or taking any damage; a superior variation of the 4-stock, in which no lives are lost but damage is taken.
James: Man, this guy crushed me in Smash!
Luke: Yeah, he didn't just 4-stock you, he JV 5-stocked you!
A JV Stock comes from Super Smash Bros. If the game ends and you are at 0%, it will be a JV(number of stocks you have plus 1) Stock. It is used often by people who play the game.
Remember, a JV Stock is what occurs when you are at 0% at the end of a game.
"I lost a stock, but at least I got the JV."
"JV4'd your ass!"
"At least I got the JV."
"That was a JV4 because I had 3 stocks and took no damage."
"Will they get the JV?"