When someone walk around with their dick out and sings Y.M.C.A, and getting a blowjob

Unicorn rainbow is when a boy cums onto your vagina and rubs it to your asshole

Even worse than ur family tree lgbt
Time stops for a milisecond and the sun grows each time it is said

Stuffing a packet of skittles up your pee hole so that you cum different colors into your partners mouth.

Tasting the rainbow

When you eat a full bag of skittles and then let your gf or wife give you a blow job

Then whilst cumming in her mouth you whisper taste the rainbow in her ear

When your wife, girlfriend or one night stand masturbates with a variety of different flavor popsicles prior to you going down on her.

When you climaxing and your cum is the consistency of the original skittles.