15
When a female is recieving oral sex on her menstral cycle and the person performing kisses her afterward.
Betty gave sarah rainbow kisses
by Liz November 19, 2002
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16
When a girl os on her period and the guy sucks her pussy and the girl sucks his cum and they exchange in a kiss....
U gave Sheran a rainbow kiss last night...heavy and colorful ...
by Danienellie August 10, 2006
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17
lickin out a gal while they are on their period, so theat u get blud in ur mouth then u kiss the gal and pass over the blood!!!!!!!!
matthew hull licked out sian and got more then he bargined for so he shared the love/blood!
by el tit face August 19, 2003
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18
When a girl is on her period and a guy licks her out.
Can also be when a guy licks out a girl when on her period and he kisses her after licking the pussy and transfers the period blood back into her mouth.
Only a real whore would attempt this.
1. I just gave this girl a rainbow kiss
2. You are fucking disgusting!

1. Never try a rainbow kiss, you will throw up
2. I know, me and this whore did it last night and we threw up in eachothers mouth !
by what was that! August 27, 2010
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19
When you eat out an Irish girl, and she forgets that shes menstruating.
When I ate out Aishling's twt before sexxxxx, my mouth got full of blood. I hope I forget this by 2mm. Rainbow Kiss!
by Eyerish November 28, 2006
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20
simply performing oral sex on a woman when she is on her period.
'just because im on the rag doesn't mean u can't lick me out'
'shit no bitch i ain't givin you no rainbow kisses'
by Gregoregory October 30, 2007
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21
When a blokes cums in a womens mouth, while the bloke eats her pussy getting a nice mouth of blood. Then they kiss and mix the cum and blood together.........nice!
"I got a nice rainbow kiss off Sharon last night"
by The expert April 09, 2006
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