I dare you

I dare you is a challenge issued to provoke someone into doing something risky, forbidden, or embarrassing.

The phrase carries an implicit accusation of cowardice—refusing the dare suggests you lack nerve.

Children use it in games of escalating recklessness: I dare you to ring that doorbell and run.

Adults use it confrontationally, sometimes as a threat: Go ahead, I dare you.

The phrase can also be flirtatious or teasing, inviting someone to cross a line.