by Darcy O'Neil on November 2010
This is a tongue-in-cheek reference to a bartender. Much like the term mixologist was originally a humorous term for bartenders in the 1800s, the "cocktologist" label arrived in 2010 (possibly earlier) and was used by Lynnette Marrero to describe her job behind the bar.
For many people, the term cocktologist doesn't at first bring cocktails to mind. The urban dictionary describes cocktologist in more sexula terms. But for the purpose of bartending, the "cock" part is in reference to cocktails, not male appendages. It can also be used in a derogatory reference to a bad bartender.