So don't chase waterfalls stick to rivers that's in ya city
And R.I.P. to Left Eye but Gucci necklace is chilly, Gucci!

from Gucci Mane – Up My Alley Lyrics on Rap Genius

Meaning

Lisa “Left Eye” Lopes from the R&B/Hip-Hop trio TLC died in 2002. Gucci’s necklace is full of icy diamonds (Chilly), reminding him of Left Eye’s death and one of the remaining members, Chilli.

This ties into the line before, referencing TLC’s hit song Waterfalls.

(Hint @ Nicole from Seth doe)
http://www.youtube.com/watch?v=d5NVLtmRZJw

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