1 and 1 is 2, its just as simple as Blue's Clues

from Clipse (Ft. Ab-Liva & Sandman) – Ain't Cha Lyrics on Rap Genius

Meaning

For all of his fans under 7, Malice explains that your actions (1) will add together to make a reaction (2), which in this case, is Malice killing you because you messed with him.
Learning is fun!

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