I just see the high lights, and Wayan like I'm Marlon

from XV – Hi, Life Lyrics on Rap Genius

Meaning

Play on famous actor, directer, writer, and producer’s name Marlon Wayans. Homonym for his last name would be Weigh In (Wayan)

Two meanings in this context for weigh-in
1. “Weigh-in” as in putting your whole body’s weight into it.
2. As the idiom states, he presents himself with a certain stronghold to his being, especially under performances on the stage (high lights)

Basically another reference for going hard when he has to.

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