They wanna knock me off the edge like a fucking widow's peak,

from Kendrick Lamar – HiiiPower Lyrics on Rap Genius

Dope. A widow’s peak is a distinct point formed in the middle of someone’s hairline edge, in the center of the forehead. It’s common practice to remove it.

He compares this to being hit off a literal peak, whether it be a physical or skill peak

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