Morgan Freeman talks God, scripts and guacamole

Morgan Freeman, the velvet-voiced doyen of some of America's best-loved movies, not to mention one of the suavest actors in the business, sometimes lets his cool crown slip.

The 79-year-old famously nodded off on camera during a sit-down with Seattle's Fox affiliate KCPQ in 2013 and was upbraided earlier this year for "drooling" over WGN producer Tyra Martin during a video interview.

On Monday it was a loud, gassy burp that elicited gales of shocked laughter from a handful of journalists gathered in a Beverly Hills hotel to hear Freeman talk about his latest movie, Ben-Hur.