Saturday evening, aliens from the planet MLi2x3 left Earth, disgusted.
After landing in Washington, D.C, the aliens approached a U.S. citizen and asked to be taken to his leader. The citizen then promptly took them to the White House where they were greeted by President Bush. The aliens tried to explain to him that an asteroid was rapidly approaching the Earth and they had come to help.
President Bush snickered, saying, "Heh heh. You said ass."
After running multiple diagnostic scans on their Universal Translator, the aliens determined that it was working properly. They then promptly determined that there was no intelligent life on Earth and had wasted their time.