Dreaming of being in a nightclub often symbolizes a desire for social interaction, excitement, or a break from routine. In your dream, the presence of security reprimanding you and your friend suggests that there may be boundaries or rules in your life that you feel are being challenged or ignored.

Your friend's action of bringing stray cats into the club could represent a sense of care or responsibility towards something vulnerable or overlooked. Cats are often associated with independence, intuition, and mystery, so they might symbolize aspects of your life or personality that you or your friend are trying to nurture or bring attention to, despite societal norms.

This dream may be prompting you to reflect on how you navigate social situations and whether you're feeling constrained by rules or expectations. It might also invite you to consider how you express your compassion or care for others, especially those who may be marginalized or in need.

Think about your current social interactions and any feelings of rebellion or care you might have. Are there aspects of your life where you feel the need to break free from restrictions to support something or someone you care about?