The Platinum Rule is the rule above the Golden Rule. The golden rule being "love thy neighbor"; the platinum rule is "never ever, ever, ever 'love' thy neighbor" (have sex or intimate relations with them).
The Platinum rule comes from the Bro Code Article 83: A bro shall, at all costs, honor the Platinum Rule: Never, ever, ever ever "love" thy neighbor. In particular, a Bro shall never mix it up romantically with a co-worker.

The 9 Stages of the Platinum rule are: Attraction, Bargaining, Submission, Perks, Tipping Point, Purgatory, Confrontation, Fall Out, and Co-Existance.
Attraction: Getting attracted to the person(s) you see on a daily basis
Bargaining: Saying that all would be alright and the Platinum rule will not apply
Submission: Giving in to the relationship
Perks: Noticing the upsides to the relationship
Tipping Point: When you notice that it won't work out
Purgatory: The never ending suffering that will follow
Confrontation:Ending the relationship
Fall Out: A reaction, a bad one, from the confrontation.
Co-Existance: Learning to live with that person(s)
Such relationships will never work out and will go through all 9 steps if its with someone you see on a daily business.

When a baseball player strikes out five times in a game. (also usable for hockey when someone scores five goals). Follows the hat trick (3), golden sumbrero (4).

The highest degree of hotness a man can achieve. When describing the obtainablility of said man platinum means not easy accessible. Four levels: Platinum, Gold, Silver and bronze

The Stand of Jotaro Kujo from Jojo's bizarre adventures. Like his user, he's an angry looking guy too. Can catch bullets, shoot bullets with its fingers and bring video games and drinks to please Jotaro while in prison. Also can stop time and beat up people while shouting ORA ORA ORA ORA...

Term used by Irish college/uni students. Like the Golden week (where one goes to every class in a week on time) except every night throughout the week one goes out on the piss, and making it into class the next morning.

Masturbatory perfection. A masturbating experience in which everything goes perfectly, and is even heightened by an unexpected occurrence, happy accident, or just a really good day.

See also Fap.

a gay man who has never even kissed a girl and was born by Caesarean Section, thereby never having had any contact with a vagina