The first occurrences of various events…

Contents:
•The first time someone yelled “look behind you” as a trick: ca. A.D. 1000.
•The first time someone got a wedgie: A.D. 96.
•The first time someone swapped urine to fool a drug test: 1176.
•The first time someone compared “shy” poop to a turtle’s head: 1573.
•The first time someone cheated by copying and pasting another’s work: 1200.
•The first time someone fretted about trees falling in forests making sounds etc.: C8 BC?

(As you may have heard, I was recently runner-up in a book review contes...