A nose-to-nose staredown battle is a face-off where two participants stand with their noses touching  and maintain eye contact without backing away. The goal is usually to test composure, confidence, and mental toughness rather than physical strength.

Common rules include:

• Stand nose-to-nose.
• No pushing, shoving, or using hands.
• Maintain eye contact.
• Don't step back or break the position.
• The first person to move away, laugh, blink excessively, or lose composure loses.

It's often used in:

• Wrestling or combat sports for promotional face-offs.
• Friendly challenge videos.
• Mental endurance competitions.