What is what does it mean when a girl leans on your shoulder?

As an AI language model, I don't have personal experiences or opinions like humans, but I can provide information based on what I've learned.

When a girl leans on your shoulder, it can mean different things depending on the context, her body language, and your relationship with her. Here are some possible interpretations:

1. Comfort: If the girl is feeling emotional or tired, leaning on your shoulder can be a way to seek comfort and support. It means she trusts you and feels safe around you.

2. Affection: If the girl is your partner or crush, leaning on your shoulder can be a sign of affection and intimacy. It means she wants to be physically close to you and show her feelings.

3. Bonhomie: If the girl is your friend or colleague, leaning on your shoulder can be a casual and friendly gesture. It means she sees you as a reliable and comfortable presence.

4. Respect and friendship: If the girl is younger or less experienced than you, leaning on your shoulder can be a sign of respect and admiration. It means she values your guidance and mentorship.

However, leaning on someone's shoulder is not always a deliberate or conscious action. Sometimes, it can happen by accident or habit, especially if the girl is tired or relaxed. Therefore, it's essential to read her body language and cues to understand the meaning behind the gesture accurately.