1 definition by Psychospazz91

When you go shit in his mouth, he goes shit in yours, and you French kiss.

Also, when a guy goes down on a girl while she is on her period, and Gets all the blood in his mouth. And a girl has blood/cum in their mouth, they kiss each other.
They did the dirty rainbow kiss.

Sally wanted to do a dirty rainbow kiss with Tyler.

He's so fine I'd dirty rainbow kiss him!
by Psychospazz91 October 9, 2017
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