Swallow my mucus
Hope your pussy get herpes and yo' ass get lupus

from Chance The Rapper (Ft. Action Bronson & Hannibal Buress) – NaNa Lyrics on Rap Genius

Meaning

Note the wordplay of Chance using metonymy with the word ass to mean the being, even as the ass is close to pussy.

Also a continuation of him being “Chance the Ruthless,” wishing horrible things on people such as STD’s. “Swallow my mucus” is yet another dirty and horrible thing.

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