Dreams can hold a wide range of meanings, and interpreting them requires considering various factors, including the dreamer's emotions, personal experiences, and current life circumstances. Here are some possible interpretations for the dream you described:
Threats or challenges: The appearance of a big snake in your parents' bed may symbolize a perceived threat or challenge in your life. This could be something you initially underestimated or didn't pay much attention to (seeming calm at first), but as time passed, you began to recognize its potential danger.
Personal growth and transformation: Snakes are often associated with transformation and shedding old layers. The fact that the snake tried to attack you but missed may suggest that you are navigating a period of personal growth and successfully avoiding or overcoming potential obstacles.
Relationship dynamics: The presence of a close friend and your mom in the dream may represent important relationships in your life. The dream could reflect concerns about these relationships, how they interact, or potential conflicts that might arise.
Dealing with fear or anxiety: Dreams involving threatening situations can sometimes reflect underlying fears or anxieties you may be experiencing in your waking life. It's possible that the dream is a way for your subconscious to process and confront these emotions.
Authority figures: The role of your mom killing the snake might signify the influence of parental figures in your life or a need for protection and support during challenging times.
Unresolved issues: Dreams can also be a way for the mind to work through unresolved issues or emotions. The appearance of a snake and its attempted attacks could represent unresolved matters that need attention and resolution.
Remember that dream interpretation is highly subjective, and the most accurate understanding of the dream can come from the dreamer themselves, considering their unique life circumstances and feelings. If the dream continues to bother you or elicit strong emotions, you might find it helpful to discuss it with a therapist or counselor who can offer further insights and guidance.