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Something from a previous time that is cool, and will always be cool. While most retro styles and things go out of fashion, something that is retro platinum will remain cool indefinitely. This does not describe something that only one person thinks will be cool forever, it has to be a general consensus.
Ex. 1

Guy 1: What the hell is on your shirt? Is that hello kitty?? That's really gay dude.

Guy 2: It's a Sonic the Hedgehog t-shirt and there is no way you can call that gay. By all means you can call hello kitty gay, and if I lost a bet I might wear a t-shirt with that cat on it but Sonic is retro platinum. Communist.

Guy 1: Oh ok, I only caught a glimpse of it. I love Sonic, I used to play that shit on my Game Gear all the time!

Ex. 2

Guy 1: Man I just bought a 10,000 Pokemon cards on eBay for $50! Including a holographic Charizard!

Guy 2: Dude, Pokemon are really gay...

Guy 1: What are you talking about man, Pokemon are retro platinum!

Guy 3: No, he's right, they're just gay.
by MikeBGSU June 02, 2009
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