Back in the summer of 2017, John Oliver did a Last Week Tonight monologue on the coal industry, where he criticised the at-the-time CEO of Murray Energy, Bob Murray. The result? Oliver got sued. But now that the lawsuit has been dropped, he's finally free to talk about it — and he's free to go after Murray once again.

Oliver really, really doesn't hold back this time, either. In the video above, he describes the lawsuit as "a bullshit attempt to silence us," before going on to discuss examples of "serious allegations of workplace misconduct" against Murray which the Last Week Tonight team unearthed while researching their piece.

"I know, that after tonight, Murray will probably sue us again, even though everything I've said has been vigorously vetted by our lawyers who — may I add — are getting very tired with us," says Oliver, before revealing that Murray has already sent a letter to his bosses at AT&T and HBO.

"So I guess, here we go again. It is yet another Bob Murray attempt to bully people into silence. And he's been doing this for decades. But you know what? I will stand behind our first piece, and I'll stand behind this one."

Bold words, but the final musical number — during which Oliver sings as many jokes about Murray as he possibly can — is on a whole other level.