The court heard of Ronan Lavery QC speaking on behalf of the Northern Irish victim Raymond McCord – but Lavery certainly had a nightmare.
Lavery spent most of his time talking about the impact of Brexit consensus on Northern Ireland – what the hearing is definitely not about.
Lady Hale, the President of the Tribunal, interrupted her in a slightly disgruntled tone.
"We have nothing to do with it," she says. "We are concerned about the legality of the decision to extend the parliament for five weeks," she added, not about leaving.
The same criticism was also taken up by a number of judges. "The purpose of this hearing is not to test the pros and cons of Brexit," says one of Lavery.
"I'm very worried about your posts – so many people are listening to you … and maybe they're all up to it." the wrong conclusion "about the purpose of the hearing," Lord Wilson added.
"Do not abuse our courtesy and do not abuse Lady Hales patience."
Lavery had informed the court that "the increasing tide of nationalism we are experiencing is poisoning the harmony of EU states" and is directly affecting the functioning of Northern Ireland.
Add the current legal question "in a way that recognizes the impact" on Northern Ireland, and add that establishing a hard border in Northern Ireland after a non-closed Brexit would be "devastating".
But it does not seem that his comments will have much of an impact on the case.
Any link: McCord's 22-year-old son was assassinated by the UVF, a loyalist paramilitary group. 1997 in Belfast. He sued the government on the grounds that its Brexit strategy could undermine the Good Friday Agreement and lost its case. However, his team was asked to attend this hearing as well.
] "Many Victims of the Northern Ireland Conflict a Seeking Justice Still," Lavery told the judges.
"My client is satisfied with his identity, he has a British and an Irish passport." It should be applied, "the lawyer added.