Dream about big slug is a metaphor for new found freedom and independence. You are addressing and confronting emotional issues. You are creating or directing new found energies to some aspect of your life. Your dream is a metaphor for respect and reverence. You are keeping your hopes up about something.
Big slug dream is a message for your physical body and the attention you give it. Perhaps you are feeling self-conscious about specific gender roles. You feel someone is taking advantage of you or is using you. Your dream is an indication for independence and freedom to do what you want. You are moving beyond the limits in some area of your life.
If you dreamt about big slug:
Your strong physical energy is helping you persevere through the challenges of the day. Other people are likely to be aggressive toward you. Try not to take anything personally. This anger is their energy to work through, not yours.