
Meaning – bravery boosted by alcohol
During 17th century, the enmity between England and Holland increased because of control over sea and new world searched. So during one such a war sailors aboard the Hollander British warship were given brandy before beginning of the war. Due to this enmity, wherever Britishers settled, they started their anti-Dutch tradition.
Source: http://www.phrases.org.uk
Image Source: wikipedia.org
P.S. :- Intention of second post was just to make sure 100th post is on my name. :D :D