The inability or refusal to listen to one's own instinct or 'gut feeling' but to instead follow the majority for fear of being wrong, ostracized or ridiculed.
If a herd of animals were haded for a cliff, for the sake of a herd mentality, I doubt one would veer off or stop to save its own life.
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.
Buy the mug