The final line on 'Game of Thrones', as it turns out, was a joke. Literally. And we'll never know the punchline.

One of the last scenes on the 'Game of Thrones' finale saw Tyrion Lannister, Brienne of Tarth, Bronn, Sam and Davos Seaworth gather to discuss how Westeros is to be governed from now on.

What followed was a montage showing Jon Snow and Sansa and Arya Stark go their separate ways. But it was actually the prior King's Landing-set scene that ended up including the final line of the HBO fantasy series.

And it came from none other than a favourite on the show - and the character who has had the most screen time across the series - Tyrion.

The only surviving Lannister says:

"I once brought a jackass and a honeycomb into a brothel."

That's the line. And as it turns out, it's a joke the character has been trying to tell across the series. However he's always interrupted before the punchline. And the same happens here.

He first tried to tell the joke in season one when he was on trial for the attempted murder of Bran.

While listing all the bad things he's done throughout his life, he told the opening line of the joke but then Lysa Arryn cut him off.

In season six, he had another go during a conversation with Missandei and Grey Worm in Meereen.

We get a little more of it this time, as he continues: "The madam says". This time, the Masters interrupt him.

In the last episode, the scene simply, unceremoniously, cuts after Tyrion's line.

Guess we'll never know the probably likely story of what happened with the jackass and honeycomb in the brothel.