Yes, it was (is?) popular in South Africa for sporting events where alcohol was not allowed.
gooddrinksetc.blogspot.co.uk/2010/07/vodka-watermelon.html
I googled "vodka watermelon" and there was even a Jamie Oliver recipe 
How to deal with doom-y thoughts
MI5 warns of right wing opinion shifting from anti-migrant opinion to terrorism
Conundrum regrding friendship.
