In a heated, wide-ranging prime time debate that touched on topics from food stamps to Social Security but often resembled a playground shouting match, comedian Jon Stewart and Fox News host Bill O’Reilly found little room for agreement but plenty of time for personal jabs and hammy theatrics.

The 90-minute debate, moderated by former Fox host E.D. Hill and billed as “The Rumble in the Air-Conditioned Auditorium,” was held Saturday night at George Washington University. Each television personality stood behind a lectern, as presidential candidates Barack Obama and Mitt Romney did Wednesday night.

“My friend Bill O’Reilly is completely full of shit,” Stewart said to lead off the debate in his introductory remarks, adding that O’Reilly is in fact the mayor of “Bullshit Mountain.”