n. A shower of urine delivered onto the victim by a multicultural group of pissers.
In prison, Sven, Tuan, Rajif, Leroy and Chief Bigbear all gave Stevie a rainbow shower.
ayon kay Mango ika-02 ng Enero, 2003
2 more definitions
Vomit play. Contrast with "golden shower", "brown shower", etc
ayon kay Anonymous ika-29 ng Mayo, 2003
A group of people pissing on one person
"I just sat there under a stream of rainbow showers"
ayon kay Chris1372 ika-25 ng Marso, 2008