We used to kick it in the salad days
When she look at me like she ain't know me when she see me nowadays
I nod, she nod back, that's how it stay

from Talib Kweli – Ms. Hill Lyrics on Rap Genius

Meaning

they used to be cool back in the day now she looks at him like she doesn’t know him [think of one of your exes or old friends].

“Salad days” is an idiomatic expression, referring to a youthful time, accompanied by the inexperience, enthusiasm, idealism, innocence, or indiscretion that one associates with a young person. More modern use, especially in the United States, refers to a person’s heyday when somebody was at the peak of his/her abilities—not necessarily in that person’s youth.

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