I've been aware of Someone's antics for quite some time now. He tends to cause all kinds of trouble and still manage to frame innocent people for his crimes. Time after time I would explain to my parents that Someone else had broken/torn/obliterated that thing/tree/car/brother, but they only considered the evidence that had obviously been planted on me.
In school, Someone must have done something with my notes. Someone else was whispering in class/passing notes/reading the Iliad/translating my homework into Elvish runes/playing a drum solo on my desk.
In time, I started to realize the truth. There's no way that any one individual had been present with me all of that time. Obviously, I was dealing with a conspiracy. "Someone" is not a single individual. The name itself is an attempt at misdirection.
Well played, Someone. Well played.