pack mentality
nounUK /pæk mɛnˈtæləti/
US /pæk mɛnˈtæləti/
The way people act like a group of animals that all follow each other.
When everyone in class started laughing, I felt the pack mentality take over and laughed too.
OTHER MEANINGS
2. The instinct of animals that live and hunt together in a group.
Wolves show pack mentality when they hunt together as a team.
3. A strong feeling of loyalty to your friends or team.
The players had a real pack mentality and always stood up for each other.
4. The habit of doing something just because everyone else is doing it.
Buying the same shoes as all his friends was pure pack mentality.