petro, adj. — Green’s Dictionary of Slang

petro adj.

[P.R. Sp. petro, scared]

(US) terrified, fearful, paranoid.

1995		(con. 1985–90) P. Bourjois In Search of Respect 39: I’m outta here. You guys have made me petro [paranoid].
2004		A. Mansbach ‘Crown Heist’ in Brooklyn Noir 124: He was too petro [...] He was shitting his pants more than I was.