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From the television show "Lost Girl". This is the relationship pairing of Bo, a succubus, and Lauren, the doctor. Doccubus is the combination of doctor and succubus.

John: "Hey do you watch Lost Girl?"
Jane: "Yeah! Doccubus is my favorite pairing!"
John: "Doccubus for life."
by MidnightProcrasinator January 07, 2013