What is "yipes"

Usage examples of "yipes".

This book spill off the page in all directions, kaleidescope of vistas, medley of tunes and street noises, farts and riot yipes and the slamming steel shutters of commerce, screams of pain and pathos and screams plain pathic, copulating cats and outraged squawk of the displaced bull head, prophetic mutterings of brujo in nutmeg trances, snapping necks and screaming mandrakes, sigh of orgasm, heroin silent as dawn in the thirsty cells, Radio Cairo screaming like a berserk tobacco auction, and flutes of Ramadan fanning the sick junky like a gentle lush worker in the grey subway dawn feeling with delicate fingers for the green folding crackle.

I hope you get this before you get that typed-up formal note my mother made me send to you about references, yipes, it was awful.