Some accomplishments are so big, they just can't be topped.

"Last Week Tonight," telling the audience that it was time for him to pack it up. After all, now that he has achieved what he claims he set out to do, what else is left for him and his show?

"Let's shut it down," he told viewers. "This show is over."

The late-night TV host became the namesake of a koala chlamydia ward thanks to Russell Crowe. The actor was auctioning off paraphernalia after his divorce, according to People, when Oliver ended up bidding on -- and winning -- a leather jock strap worn by the actor in "Cinderella Man." The comedian didn't want to keep the item himself, but he decided to send it to the last-remaining Blockbuster in Anchorage, Alaska.

Meanwhile, Crowe was entertained by Oliver's purchase and decided to use the funds for a good cause. He tweeted a video on May 2 that introduced The John Oliver Koala Chlamydia Ward, which aims to prevent the spread of the STI among koala.

After the good news, Oliver said he didn't see the point in continuing. He joked that he had now accomplished exactly what he set out to do with "Last Week Tonight," and the episode ended in a mic drop moment, shared in a tweet on Monday.

Luckily, the show isn't really ending. As Deadline pointed out, HBO renewed the series through 2020 in September. We'll still get more "Last Week Tonight" and the koala will get chlamydia relief, so everyone wins.

"Last Week Tonight" airs Sundays at 11 p.m. ET/PT.