Washington (CNN) All the coverage leading up to Mark Zuckerberg's first of two days of congressional testimony on Tuesday suggested he was in for a real grilling. The rare Washington appearance comes as the Facebook CEO's company finds itself in the midst of massive questions about data privacy and its broader role in American life.

Turns out it was more of a light-ish roasting -- thanks in large part to the fact that the vast majority of the senators tasked with questioning Zuckerberg simply lacked anything beyond a surface understanding of what it is Facebook actually does.

It was, to be blunt, like watching your grandfather try to understand how they got the internet onto your new Macbook Pro. Or asking Ted Williams about whether you put your right hand or left hand on top when you swing a bat.

Hatch: "How do you sustain a business model in which users don't pay for your service?"

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