If you have dreamed of throwing a key at someone in your dream: It may not be useful to try to warn people who are starting to lose their weight on some issues, you may want to mature your future plans. Throwing a key at someone in a dream indicates helping someone who is in trouble to find a job, get a job with them, or help them get rid of their troubles by lending. Throwing a key at someone in a dream means opening and hosting a house to a person who is in trouble, looking for a new way out.