premature boregasm
Like a boregasm, but before the boredom actually sets in. As a boregasm happens during the course of boredom, a premature boregasm may occur while the teacher is announcing a new project, lecture of a boring topic, or paper. Associated are moans, sighs, and grunts of pain and/or suspected pain to come.
Man, I thought I would have a boregasm in class today, but it turned out alright.... until she assigned us a new essay.... premature boregasm right there on the spot....