When you must finish an exam or assignment in a little timeframe, and you think you can't do it.
When I am for example in school and I have to finish an hard exercise in a short time.
I just don't see it so hard, and I think that time is longer than it actually is.
I can't, because I think everytime on the time left instead of the exercise/work.
I think that it can make me underperform/fail, but sometimes I just think people think I am better than I am actually.
Then I just think that I've done everything wrong.
Yes, that the teachers give us less work/more time.
Hope I did help you a bit