David Letterman used his personal expertise on sex scandals to pounce on Tiger Woods Monday night, but he made sure to drench his Tiger roast in irony.

"Boy, it looks like that Tiger Woods is having some trouble, huh?" began Letterman, contorting his face. He jokingly lamented that if the Woods scandal had happened months ago, he'd "have material for a year."

The 'Late Show' host is only months removed from admitting he's had multiple affairs with staffers. He peppered his monologue by asking Woods to "stop calling me for advice" on his growing sex scandal involving multiple alleged mistresses. Watch the video after the jump.