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A type of party where several girls wear a different color of lipstick then each proceeds to give one or more guys a blow job. The multiple of colors left on each guy's penis resembles a rainbow.
Phil had 3 colors of the rainbow on his penis before ejaculating into Suzie's mouth at the rainbow party. Pamela and Vicky waited for him to get hard again before completing the rainbow.
by BRD October 10, 2004
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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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2
A type of party where a large group of young girls compete to see who can mark their unique lipstick color furthest down on the shaft of a boys penis. Rainbow parties mostly likely do not exist but if they do that would be awsome.
You will not find a pot of gold at the end of rainbow parties, but their is an occasional pearl necklace.
by christopher hitchensNHM November 16, 2007
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3
Supposedly a party where each girl wheres different shades of lipstick and go to a party and suck guys dicks so the dicks are like rainbows when its over. But really, the stupid bitch Oprah made up the word cause she is a dumbass and hates children..
Oprah: Make sure ur children dont go to rainbow parties.
Parent: whats a rainbow party?
Oprah: something i made up to get your children in trouble for absolutly no reason..
Parent: That sounds pretty mean but since your like a god and all i have to listen to you.
Oprah: i want to eat your babies.
by kkkramer August 13, 2004
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4
Parties where several girls wear a different color of lipstick then each proceeds to give one or more guys a blow job. The multiple of colors left on each guy's penis resembles a rainbow.
I've been to two rainbow parties now. I didn't last long at the first one seeing all of those girls giving head at the same time with the different lipstick. Julie had me first with yellow lipstick, and I blew my load in her mouth within a minute or two. When my penis was less sensitive a little later, Karen gave me another one with her bright blue lipstick. Since I didn't cum, Pamela took over with her green lipstick when the bell was rung. She asked me to cum on her chest if I needed to, and after I did, I was done for the night.

At the second party, I was more relaxed, and before the end of the night had let each girl leave her mark.
by BRD July 10, 2005
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5
The thing that causes an outbreak of herpes among the freshman class at Kapaun Mt. Carmel in Wichita.
Those girls, after the rainbow party was finished, noticed small sores on their lips.
by ag97 March 14, 2005
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6
A word that was made up by Oprah in order to lure parents to be overly cautious for absolutely no reason.
Oprah: "Your daughter is a slut, she goes to rainbow parties, so lock her in a stone cell for the rest of her life, because I'm Oprah and I know everything!"
by Vega October 04, 2003
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