That's the sound Hubs made when this guy jumped on his arm as he walked out the door the other day. Never heard that before, typically he's QUITE unflappable. You can't scare him, tickle him, nothin'.... Hee hee... :D
This guy was large, probably 6 or so inches from head to tail.... Of course I'd have squawked if he'd jumped on me, but that's just a given, nothing noteworthy. Magpie squawked, screamed, jumped? Of course she did, YAWN.