It's wrong to not take your studies seriously.
Bob was contemplating going out with his friends on a Friday night.
Bob wants to pass his history exam that is scheduled for Saturday morning.
Bob tells his friends he needs to study and stays in, getting a full night of sleep.
Bob decides to go out to the bar and drinks until two am.
Bob takes the test and gets an A on it.
Bob goes to the exam extremely hungover and ends up getting a D which puts him on academic probation.