Dutch courage

courage of one's convictions

Steadfast adherence to one's beliefs or principles, especially in the face of criticism or other opposition.

digital courage

The sense of being able or emboldened to say something to someone over digital media (text, instant message, etc.) that one would not normally say face to face.

Dutch reckoning

A (falsified) bill that is not itemised, and that is unjustifiably high.

go Dutch

To pay for one's own food and bills, or split the cost, when eating at a restaurant or going out for entertainment.

liquid courage

Alcohol drunk to induce a feeling of courage.

take one's courage in both hands

To summon up one's courage in readiness for a difficult or dangerous action.