Milk Rainbow

When a chap is 'knocking one out' in his leisure time, lying on his back, preferably with someone watching from a distance, and blows a big load- quite high- that lands either in or around the mouth area. Making the shape of a low arching 'milk rainbow', result.

Derived from the ancient red indian word "milainbow" meaning to spunk on ones own face, or the face of a Yak, either by accident or on purpose. Such men in these tribes were worshipped for their big loads, and creative catching with the mouth abilities like a Jack Russell -thus commonly called "Jack-Russelling" in the gay community.
Andy-"Oh man last night I got spunk in my face!"

Peters-" Did it go in your mouth dude?"

Andy- "A little bit, why?"

Peters- "Mate, Milk Rainbow"
by "TheMurph" November 12, 2009
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rainbow loom

A bracelet making kit. Easy for kids, painful for adults
Jill: do u have rainbow loom?
Julie: yea, I love it
by Happy love hit February 28, 2014
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Rainbow smile

to smile out of happiness while crying of sadness
she had lost all hope, but love in friendship made her dawn a rainbow smile
by audiodecoy April 05, 2005
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Rainbow Party

A "rainbow party" is supposed to be a party where girls wear different shades of lipstick and suck a guy off. In actuality, it is a term invented by Oprah and no teen had heard of it until her show in 2004.
Oprah invented rainbow parties so parents can lock up their teens and send them to boarding school.
by C March 15, 2005
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rainbow party

In the US, it is apparently a euphemism (or media-invented myth)for rather lewd naughtiness (see all other definitions). In the UK, it means jelly, ice-cream and dressing-up as Zippy, Bungle, Geoffrey, George, Rod, Jane or Freddy and singing "The Wheels on the Bus". The latter seems condusive to a much more satisfying experience.
Yank: Dude, I'm so emotionally crippled and shallow, I went to this badass Rainbow Party last night. Now I feel even more empty and my dick's kinda itchy.
Limey: I say, old bean, I had a Rainbow Party last week! We all had a beezer time, despite Bungle having eaten too much jelly and ice-cream.
by chris wheelie June 15, 2005
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poop rainbows

unbelievably cute, so cute as to actually make you excrete in the colors on the rainbow.

OMG your puppy is so cute i could poop rainbows!
by Zuf April 08, 2008
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Rainbow Farts

To be so excited about something you almost shoot the gayest thing in the world out of your butt. Similar to pooping kittens.
I saw the cutest little puppy earlier and it made me shoot off several rainbow farts.
by plaidtattoo February 11, 2009
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