Top definition
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 26, 2009
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Dirty Sanchez Plush

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2
To have a nice smelling fart.
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 July 28, 2016
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