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1.
Any course but especially a college elective course thought to be "fluff" an easy A...however it turns out to be harder than hell and the student barely passes the course or has to drop it or suffer consequences.
Student 1: Dude, I signed up from Speedeli's basket weaving class.

Student 2: No way!! Speedeli makes you spend three weeks hiking the Appalacian trail looking for raw materials with your bare hands. That class it unreal...totally hellective. You better drop it now while you have a chance.

Another example:

Kelly lost her 4.0 GPA after taking an hellective sculpture class taught by Mr. Biggums.
by DOTK April 24, 2012