That's not difficult at all since black shitty vodka is also vodka ;)
Anyway, I don't think half a bottle of vodka is the great thing. Here, homeland of the botellón, even an average 14yr. old can drink that xD I challenge all of you to drink a entire bottle of Jägermonster/Rippermeister (1 bottle of Jägermeister + 1 33cl can of Monster Ripper).