Rainbownian 

Someone who was born in, lived in or currently resides in Rainbow, Victoria, Australia.

I was born in Rainbow. I guess that makes me a Rainbownian.

Rainbownian by Thomo D-burgh August 26, 2012

rainbow dance 

Rainbow dance is often the term given to a dance before sexual activities are undertaken.

This dance is usually performed with assistance of a tie or any other means of tying up the other partner in order to fully maximize pleasure during the dance.

Jess: "I'ma give you a rainbow dance.."
Paul: "What is that?"
Jess: "You're about to find out.. *Gets tie*"

rainbow dance by RoaryMcLionTeddy October 7, 2013

Rainbow Row

When a group of girls wearing different colored lipsticks go down on a group of guys, leaving a ring of colors on their junk resembling a rainbow.

"Dude you missed out on rainbow row last night! My penis looked like a skittles commercial"

Rainbow Row by RubbinNibblies January 5, 2014

rainbow bucket

When you put Botha your legs behind your head and try to lick your own bumhole

Everyone loved my new rainbow bucket part trick

rainbow bucket by Curry123456 January 7, 2014

rainbow sponge 

dope.

"I hope you buy a rainbow sponge and it doesn't work!" said Hope to Danielle.

Basically, Hope said that she hopes Danielle buys some drugs, but they aren't drugs; they're fake drugs.

rainbow sponge by rossbrunch February 28, 2014

rainbow tilt 

The famous rainbow tilt is a majestic curve to anything with the shape of a beautiful rain bow. BOOM MIND BLOWN! Or when Keith bones a blonde slut in rainbow tilt formation.....

When you have sex like Keith rainbow tilt style

rainbow tilt by Showl squad July 9, 2014

rainbow train

When 7 girls suck your dick with different shades of lipstick you get the rainbow train

A bukkake party ending with a rainbow train

rainbow train by bov October 8, 2014