1.
This important discovery:
5.
This VERY extra teacher:
6.
This hysterical mistake:
8.
This misunderstanding:
9.
This common occurrence:
10.
This confusing button:
12.
This entire situation:
13.
This pleasant moment:
14.
This brilliant mistake:
16.
This misinterpretation:
18.
And finally...whatever this is: