HBO Last Week Tonight host John Oliver stopped by Stephen Colbert’s The Late Show on the eve of Super Tuesday 3, when Donald Trump is forecast in some polls to become the inevitable GOP candidate for the White House, to explain why he has changed his”I couldn’t give less of a s**t” position on Trump and jumped in to the kerfuffle.

“I didn’t care, and I didn’t think I’d have to care,”  Oliver explained.

“Well, no one thought they’d have to care!” Colbert jumped in, explaining the too-little-too-late approach of the rest of the media, and other candidates, to the real estate mogul turned reality TV star turned GOP frontrunner.

Last fall, Oliver appeared on Colbert’s show and declined to discuss Colbert’s fave subject – Trump – saying he could not possibly care less about the candidate. But, late last month, Oliver devoted nearly all of his show, too late according to polling, to a takedown of Trump on the eve of Super Tuesday 1, at which Trump mopped up a good swath of the 600 delegates at stake. Oliver revealed Trump’s family name was “Drumpf.”

“So if you are thinking of voting for Donald Trump, the charismatic guy promising to Make America Great Again, stop and take a moment to imagine how you would feel if you just met a guy named Donald Drumpf, a litigious serial liar with a string of broken business ventures and the support of a former Klan leader who he can’t decide whether or not to condemn.” Oliver cautioned, “Don’t be blinded by the magic of his brand,” Oliver cautioned viewers then. “Don’t vote for him because he tells it like it is. He’s a bullshit artist. Don’t vote for him becauseMake Donald Drumpf Again he’s tough. He’s a baby with even smaller fingers. Don’t vote for him because he’s a builder. He’s more of a shitty lifestyle brand.”

Last Week Tonight trademarked the name “Drumpf,” created the website, where you still can download the Drumfinator app to replace “Trump” with “Drumpf” wherever it appears in your browser and buy Make Donald Drumpf Again hats which they were selling at cost. Last night, Oliver told Colbert they sold about 35K hats – and Jay-Z asked HBO for a free one, which Oliver said, he should have purchased, and let the money  “trickle down.”