Rainbow Pasta Salad
When a person dresses up like a unicorn (or finds a real unicorn) and another eats their fart box...to find that the unicorn has worms.
Matt was eager to find out if unicorns really farted rainbows, but unfortunately found a tapeworm at the end of the rainbow...but still he happy enjoyed his rainbow pasta salad.
Rainbow salad
When people of the same sex eat skittles out of their asses
Hey, what are you doing later, want to eat a rainbow salad?