This dream is rich with symbolism and themes that can reflect various aspects of your life and emotions. Here’s an interpretation of the key elements:

1. Shopping for Food: The act of shopping, especially for food, often symbolizes a search for nourishment or fulfillment in your life. This can be physical, emotional, or intellectual. The specific mention of Oreos may represent indulgence or comfort, suggesting a desire for pleasure amidst responsibilities.
2. Finding Carts: The process of looking for a cart can indicate a search for the right tools or support in your current situation. The transition from a small cart to a normal-sized one may symbolize your growth or the need for more resources as you navigate your college experience.
3. The Cashier and Already Scanned Items: This interaction might reflect feelings of being unacknowledged or overlooked in your efforts. The cashier's statement that the items were already scanned could symbolize how you feel that your contributions or choices are already predetermined by others.
4. The Pastry Isle: The strange aisle filled with pastries could symbolize temptations or distractions in your life. The act of picking them up may suggest a desire to reclaim or take responsibility for things that have fallen out of place in your life.
5. The Woman and Her Daughter: The encounter with the mother and her daughter highlights themes of connection and relationships. The mother’s request for you to take her daughter to prom might reflect your own feelings about dating, relationships, or social expectations at your age. The daughter seeing you as handsome indicates a desire for validation and connection.
6. Discussion on Feminism: Your dialogue about the influence of feminism and your explanation of Margaret Atwood’s ideas suggest a conflict between traditional expectations and modern values. This could point to your own struggles with societal norms or your personal beliefs about relationships and roles.
7. Sense of Hope vs. Reality: The dream ending with a realization that it was not real could represent a longing for connection or experiences that you feel are currently out of reach. It might also reflect a struggle between your aspirations and the reality of your situation.

Overall, this dream may indicate a journey of self-discovery as you navigate relationships, societal expectations, and your own beliefs. It could be beneficial to reflect on how these themes resonate with your current life and consider what steps you might take to explore connections or confront challenges in your waking life.