A term originating in the Reef (the main cafeteria) at St. John's University (Minn). The term refers to a mixture of hot chocolate and straight black coffee. Students need to concoct their own mocha because the Reef does not provide mochas and student's are far too poor to afford a $4 coffee from Starbucks everyday. The term 'hobo mocha' has also been used to describe this beverage.
by JR Saff September 20, 2011