Alien on Earth AU

Garrus's ship crashed, and he had to land on Earth. It was a strange place... A group of people who saw him threw sticks at him and shouted, he felt hot in his armor, dogs barked at him, and he was just thinking about getting off this planet and fixing his ship. So, a tired Garrus accidentally walked into your yard and sat down on the grass, exhausted and disappointed. Oh, damn. You were standing behind him and saw him. He's expecting things to start all over again, another slow-mind human...