Dreams like this can be quite intense and may reflect various emotions and experiences in your waking life. Here are some interpretations of the key elements in your dream:

1. Being in Lingerie: This could symbolize vulnerability or feeling exposed. Lingerie often represents intimacy or sexuality, so it might indicate feelings about your own femininity or confidence in your body.
2. Locked in a Room: This can signify feelings of being trapped or confined in a situation. It may suggest that you feel a lack of control or power in your life.
3. Confrontation with Fraternity Guys: The fraternity guys may represent a group or societal pressure that you feel challenged by. Your response to fight back indicates a desire to reclaim power or assert yourself against perceived threats.
4. Cancerous Knot: This could symbolize something in your life that you perceive as unhealthy or harmful, possibly in relationships or social dynamics. It might also reflect a concern about someone's well-being or your own health.
5. Demanding Money: This part of the dream could suggest a desire for compensation or recognition for the struggles you've faced. It might symbolize a need to stand up for yourself and demand what you feel you deserve.
6. Fried Turtle in Lunch Bag: Turtles often symbolize protection or a retreat into oneself. Finding a fried turtle could imply that you’ve come across something unexpected or that a part of you is feeling vulnerable. It might also indicate a surprise or a realization about your own situation.

Overall, this dream seems to touch on themes of empowerment, control, vulnerability, and self-worth. It could be helpful to reflect on any situations in your waking life where you feel challenged or where you need to assert yourself. Consider exploring these feelings further, perhaps through journaling or speaking with someone you trust, to gain deeper insights.