Have you ever been eating an ice cream cone at McDonald’s one minute, and the next you’re spitting venom at the geriatric who only put two swirls on the cone, when dammit, there are supposed to be three?

Is your road rage getting you in legal trouble, say, vehicular homicide?

Are you the type who pulls out the knives, literally, when a calm and collected “F-You” would suffice?

It sucks to be you. Because as it turns out, your irrational behavior isn’t just a total lack of effective communication skills.

The reason for your anger: genetics. The DARPP-32 gene, to be exact. Which means you can blame your parents for passing on more than just a big nose and a small pecker. (We said blame, not kill.)

The study, from German researchers at the University of Bonn, also found that those who display more anger have less grey matter in the amygdala, a part of the brain that helps keep our emotions balanced.

“So what are you sayin’, huh, I’ve got a small brain? How ’bout I take that study and bash in your stupid face ’til it comes out the other end, Doctor Dickweed,” one of the study participants said to reporters.

Officials fear the report will royally piss off a lot of people.