earplugs in
These are the holy grail of college life. With them in, you can crush your exam, ignore your friend's snoring, and forget that your roommate is eating a sandwich at 2 a. m.
I took my final exam with my earplugs in. I didn’t hear my friend screaming, 'I got a B!'
I used my earplugs during my math test. I didn’t notice the fire alarm went off.
I studied for my chemistry test with my earplugs in. I didn’t hear the professor say, 'This is the worst class I've ever taught.'