And per Conan style, they went straight to the heart of the controversy.
"Guess what, Groupon just made an ad that I believe is even worse," O'Brien jokingly said during Tuesday's show.
Two groan-worthy mock commercials followed, one pairing Osama bin Laden with a scene from a bowling alley cheekily advertising "death to high prices." The second followed suit with Native Americans and a fake TGI Friday's ad with a guy in a headdress.
On Monday O'Brien kickstarted the series of fake ads with one featuring the Hindenburg and a sandwich shop's "explosion" of deals.
Get it? Groupon got more than that following Sunday's offending ad about Tibet. Groupon CEO Andrew Mason said Monday he spent all day fielding questions about negative backlash to the company's ads.
Here's what was said in part of the ad: "The people of Tibet are in trouble, their very culture in jeopardy. But they still whip up an amazing fish curry. And since 200 of us bought on Groupon.com we’re getting $30 worth of Tibetan food for just $15 at Himalayan restaurant in Chicago."
Groupon pulled the commercial, saying, "We took this approach knowing that, if anything, they would bring more funding and support to the highlighted causes. ... The last thing we wanted was to offend our customers -- it’s bad business and it’s not where our hearts are."