But if I got my Nina then you know I'm straight tripping

from Dr. Dre (Ft. Snoop Dogg) – Nuthin' But A G Thang Lyrics on Rap Genius

Meaning

If he has his Nina Ross (slang for gun), then he’ll be “trippin'” (going nuts shooting people)

“Straight” is a double entendre: it describes his aim while shooting and is also short for “straight up”, meaning “I’m going to be seriously trippin'”

To help improve the meaning of these lyrics, visit “Nuthin' But A G Thang” by Dr. Dre (Ft. Snoop Dogg) Lyrics and leave a comment on the lyrics box