You know what I saw

from Beastie Boys – 59 Chrystie Street Lyrics on Rap Genius

Meaning

Probably, a penis, given the following explanation:
“Built on a Burundi drum sample from Joni Mitchell’s ‘The Jungle Line’ [this song] suggests a ‘Lola’-esque encounter with a groupie, put plays titular homage to the address of the Beasties' old Chinatown loft.” —excerpted from the 33 1/3 Series book, Paul’s Boutique, (2006).
However

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