Rainblow is the practice of having several females, each wearing differant colored lipstick, performing oral sex on a man. This will leave a rainbow effect on his penis.
Rainblow is when you are performing oral sex on a man, and its really big, your mouth starts to water down the shaft as your gag reflex kicks in, ,and then use it for lube, as you are jerking him off and sucking his cock
"The guys cock was so big lastnight, I had to rainblow him"
verb
Sex act;
when one preforms fellatio on a male with skittles in their mouth. When the male ejaculates, the cum and skittle spit mix together, creating tasty rainbow slime. The two engaging in the act begin kissing and swapping spit. It is similar to snowblowing.
Dude, I just got the craziest rainblow last night.
I think you've earned yourself a rainblow.
Honey, I have had the gosh darn'st dirtiest day in the ditch, could you do your mister a favour and rainblow me tonight?
A term used when someone is involved in a colorful situation involving a mouth full of Skittles candy and and a blowjob. The name riffs on the Skittles slogan and the idea of a rainbow turning into a “rainblow" or "chase the rainblow"
Bruce had a hard day at work. When he got home, his wife surprised him with a colorful, sweet rainblow.