Four way preflop all-in, 2QQ+2JJ, odds?

[Danastasio1]

Summer 2005 I played in a six handed game and experienced one of the craziest situations I've seen. Four all-ins preflop are rare, but it was the end of the game, so it's not that strange for a home game. Two players had queens, and two players had jacks. What is the chance of this happening in any random hand, or what tool is out there to figure the odds of this ever happening? On top of that the guy to my left won with a flush. Thanks