I'mma show you how to turn it up a notch
First you get a swimming pool full of liquor, then you dive in it
Pool full of liquor, then you dive in it

from Kendrick Lamar – Swimming Pools (Drank) Lyrics on Rap Genius

Meaning

https://twitter.com/RapGenius/status/275412526014017537/photo/1

Kendrick himself said that this line was about buying so much liquor that you could fill a swimming pool with it.

The person speaking to Kendrick was telling him to get loads of alcohol and drink it quickly, or “dive in it”. Peer pressure can drive someone to drink more than they physically can.

He uses hyperbole to highlight the ridiculousness of some people’s consumption of alcohol.

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