Appearing Wednesday night on CBS’s “Late Show with David Letterman,” Kathy Griffin made no apologies for her New Year’s Eve appearance in which she simulated oral sex on CNN host Anderson Cooper on live TV, USA Today reports.

"If you think this is the part where I’m going to apologize for trying to go down on Anderson Cooper, you are sorely mistaken,” said Griffin, who has a reputation for stirring controversy. As previously reported, the latest incident continues a series of edge-pushing New Year’s Eve stunts for the comedian.

Here’s a clip of Griffin’s Letterman appearance, which includes footage from the CNN telecast: