At one point during the exchange, Mr Poole was asked to define “rickrolling”.
“Rickroll is a meme or internet kind of trend that started on 4chan where users - it’s basically a bait and switch. Users link you to a video of Rick Astley performing Never Gonna Give You Up,” said Mr Poole.
“And the term “rickroll” - you said it tries to make people go to a site where they think it is going be one thing, but it is a video of Rick Astley, right?,” asked the lawyer.
“He was some kind of singer?”
“It’s a joke?”
The internet prank was just one of several terms including “lurker”, “troll” and “caps” that Mr Poole was asked to explain to a seemingly baffled court.
But that is hardly a surprise, according to David Crystal, honorary professor of linguistics at the University of Bangor, who says that new colloquialisms spread like wildfire amongst groups on the net.
“The internet is an amazing medium for languages,” he told BBC News.
“Language itself changes slowly but the internet has speeded up the process of those changes so you notice them more quickly.”
People using word play to form groups and impress their peers is a fairly traditional activity, he added.
“It’s like any badge of ability, if you go to a local skatepark you see kids whose expertise is making a skateboard do wonderful things.
“Online you show how brilliant you are by manipulating the language of the internet.”
Nice little roundup of the developments in slang happening today.