Once in a while you come up with a joke that as a white, heterosexual male, you just lack the barometer to gauge if it's political or not. And you kinda have to just put it out into the world and hope that the world remains the same amount of offended as it's been all along.
Different people get offended by different things, I for one only get offended my people who doesn't follow my Twitter feed. It's because I'm a cartoonist, isn't it!?
As to the description, I agree, but think about this: Anything you do or don't say, do or don't do, or just whatever you put out there or don't put out there, someone, somewhere, will be offended by it. It doesn't make sense to bend in to political correctness when you can't not offend everyone. It makes more sense to just be yourself, state your opinions and piss other people off.