Bromosome
Bromosomes are like regular chromosomes; strands of DNA, but that contains genes that determine your broism. Depending on theses genes, you are either a bro or a broser.
Doctor Broski: I'm sorry Mark, your bromosomes tell us that you are a tool.
Mark: Is there any cure?
Doctor Broski: No, I'm afraid you're going to be like this the rest of you life.
Mark: Is there any cure?
Doctor Broski: No, I'm afraid you're going to be like this the rest of you life.