A fork of Rural Dictionary
Expression used when someone dies doing something stupid. Can alternatively be used for the deaths of people deemed unworthy of reproduction.
Likens the dead to microbes in a metaphorical gene pool, chlorine being a chemical used to kill microbes in actual pools.
“Did you hear about the robber who got killed robbing a 7-Eleven with a fake gun?” “More chlorine in the gene pool, huh”