For the dog that don't pee on trees, is a bitch
So says Snoop Dogg, get your pooper scooper
Cause the nigga's talkin shit

from Snoop Dogg (Ft. The Lady of Rage) – G Funk Intro Lyrics on Rap Genius

Meaning

Female dogs don’t pee on trees so they must be a bitch, which is an obvious pun for a female dog, and they only talk shit, which is why Snoop Dogg says get your pooper scooper, cause most niggas only talk shit and aren’t really Doggs like Snoop.

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