A sound of confusion, is often used by individuals with brain damage.
His brain couldn't really parse what had just happened. If he was a computer, he would have short-circuited, but fortunately he wasn't a computer. He was a person, and people generally don't short-circuit. So, rather than doing that, he let out a startled "Wrbl?" and just stared.
by Wrblwrbl December 17, 2010