Oh i'll be on the sidelines rooting for my dime
Holding up my sign and it say

from Lupe Fiasco – Go Baby Lyrics on Rap Genius

Meaning

Lupe saying hell be there for his beautiful girl (a dime is a 10/10) supporting anything she does. Lupe metaphorically stands next to her with a sign reading “go baby!” Just by him being there he’s supporting and rooting for her.

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