A cheerio is a term given to a woman's vagina that is so tight it feels like having intercourse with, you guessed it, a cheerio. Platinum status occurs when said cheerio is able to bounce back to its original tightness regardless of how much intercourse it has received. After having said intercourse you as a male have now been ruined for all other vaginas and no other could possible compare.
Dick; Damn Jane, you must do a ton of kegals?!

Jane; Not really, I have a cheerio!

Dick; Well, we've been at it for three hours and it hasn't loosened up. Your cheerio is so good its a platinum cheerio.
by Vasshole 1 July 18, 2011
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