I’ll see you later US “Guacho” prounounced “watch-o”, a pure invention. Border Spanish used in English conversation by Mexican-Americans.
— George Carpenter Baker, Pachuco, p. 40, January 1950
“Ay te watcho, man.” “Easy.” — Thurston Scott, CureitwithHoney, p. 14, 1951
Cruz shook his head and said, “Ahi te huacho,” which is anglicized slang meaning l’ll be seeing, or rather, watching for you. — Joseph Wambaugh, TheBlueKnight, p. 61, 1973