<human>: Give me a shortened version of the text

So I am in 11th grade and yesterday, I had an important science multiple choice exam. As stupid as I am, I waited the night before to start studying and realize I didn't know shit.  I was pretty desperate and stayed up all night studying. It doesn't take a genius to figure out it's impossible to learn a whole year's worth of science (given that my average is 58%) in a night. So, I was tired AND didn't know anything. Don't worry that's not the FU. The real stupid part is, in the morning, instead of getting up and just getting the exam over with, I stayed in bed and slept. Oh, and did I say that my parents promised me that, if I got an average grade higher than 50%, they would buy me a motorcycle? Anyway, so I slept on and, at around 12 I received a message from a friend:
"Where TF were you?" 
So I responded I was going to fail anyway so I just didn't go to the exam. 
Here's his response:
"You're so stupid you could get 30% of the mark if you didn't put an answer"
This is when I remembered that, a few weeks before, the science teacher had told us that it's better not to write anything at all than just writ a random answer, which is why we would get 30% of the mark if we didn't put anything. 
This was truly a FU, instead of getting 0 I could have gotten 30% and maybe not have failed science class.
<bot>: didn't attend a multiple choice exam where I could have gotten 30% if I hadn't written anything but stayed in bed.