When you insert a test tube into your urethra (Typically male) and make a chemical reaction in the tube, allowing the reaction to fizzle all over the genitals involved.
Person 1: Why were you screaming in the bathroom?
Person 2: I just had chemsex last night and the oxidization burned my dick
Person 2: I just had chemsex last night and the oxidization burned my dick
by chemboiii March 28, 2019