Two Aliens walk into a bar.
The bartender moans: “Not these guys again!”
They drink heavily and get more belligerent as the bar fills up with human patrons.
The insults begin: “Hey, Earth people, are you still flying airplanes instead of space ships? Haven’t mastered light-speed yet? What – no invisibility ray? Whaddaya mean you’ve never been to Alpha Centauri?”
Their insults drive everyone from the bar.
As the aliens settled their bar tab, they ask, “Hey, bartender, for all the times we’ve been in here, you’ve never once asked where we’re from?”
The bartender says: “Well, since you guys are such a couple of assholes, I’m guessing you’re from Uranus?"
In shock, the aliens mutter, “He got it in one!”