-When you have a week to do it but you end up doing it the night before.
-when the teacher says it won't take a while, but it ALWAYS does
-when you spend ages on it but they give you a bad mark
-PROCRASTINATION! This always happens to me! Comment if you procrastinate as well
-when the printer doesn't work at home but when you tell the teacher they think it's a bad excuse
-having to do homework in the first place
-when you have to do homework's that take about a week