A person who constantly wants or desires friends, significant others, objects of desire, etc. that he or she does not have. When a rainbow chaser finally obtains the friend, significant other, object of desire, etc. that he/she so longed for; the rainbow chaser does not appreciate whatever the subject he/she was seeking and moves on to other desires that are not obtained. Rainbow chasers are never truly happy as they never appreciate anybody or anything. Because they are so selfish and lack commitment, rainbow chasers can be narcissists.
by Major Madcat July 17, 2019

Your rainbow fish is the person who everyone thinks you like but you don't really like. Rainbow fish is for teasing purposes and for confusing people who don't understand what it means. It can become very annoying.
Pheobe: Your rainbow fish is Heston, Izzy!
Izzy: What?! Never. Your rainbow fish is Adam!
Pheobe: Yuck no! Not Adam!
Adam: What am I?
Pheobe and Izzy: Doesn't matter!
Adam: *walks away confused*
Izzy: What?! Never. Your rainbow fish is Adam!
Pheobe: Yuck no! Not Adam!
Adam: What am I?
Pheobe and Izzy: Doesn't matter!
Adam: *walks away confused*
by DeviLs brOther April 15, 2021

"Dude, seriously you're a frickin rainbow licker, go fuck a guy"
-"He's a beast!"
-"Nahh hes a rainbow licker."
-"He's a beast!"
-"Nahh hes a rainbow licker."
by thecoolestsinceslicedbread April 25, 2010

by bumfuck January 3, 2008

by Von Meek January 23, 2009

Yo, that nigga Tirrell he tried to put his dick in my mouth; I didn't know he was a chocolate rainbow?
Yum, I want that chocolate rainbow.
50 cent is the biggest chocolate rainbow of them all!
Yum, I want that chocolate rainbow.
50 cent is the biggest chocolate rainbow of them all!
by suga night June 2, 2010
