Green’s Dictionary of Slang

(US) an excl. of irritation, what the fuck! excl.

1993		L. Rodríguez Always Running (1996) 78: ‘Chingao!’ I yelled.
1997		E. Little Another Day in Paradise 134: ‘Chingow, pardon the fuck out of me, mija.’.
2000		M.E. Dassad ‘Chickenhawk’ at www.cultdeadcow.com 🌐 ‘Chingao...’ he breathed. ‘So young. Like that VC girl we bagged, over there . . .’.