Meaning to be happy or excited in a sarcastic way.
Example 1 - I am so happy, I am farting rainbows

Example 2 - gee... your not having fun, because I am farting rainbows over here.
by kjj5hf October 27, 2009
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Felicia:"OMG I was farting rainbows the other night because of those fruit smoothies!"
Lakeisha:"OMG gurl, at least it wasn't a nasty one."
by Princess_Felicia March 14, 2016
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When someone is so head-over-heels in love with someone that they believe their own previously toxic flatulence has been magically transformed into something inordinately wonderful.
Ever since I first laid eyes on her I’ve been farting rainbows and unicorns!
by Dr Bunnygirl May 20, 2021
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Such a warm happy feeling inside over something utterly delicious or satisfying, extremely pleasant, fullness of self.
I am so happy that you, two, finally got married: I could just fart rainbows.
by Guido1 January 7, 2011
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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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When a man farts out the juices that another man released in his rectum after gay sex
Hey man last night was fun, but I rainbow farted when I got home and my girlfriend got really jealous.
by Mommyspeepee326 November 11, 2020
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Rainbow Farts happen when you end up eating too much colorful food like skittles and M&Ms to the point where you shit out farts that are rainbows.
*Jacob munches on some M&Ms*
Jacob: *FARTS*
Jacob: OMG OMG OMG I JUST HAD A RAINBOW FART
by Khagreytits September 8, 2014
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