It was the Edinburgh Fringe Festival recently, which is a huge comedy and arts festival that occurs yearly. If you’re a stand-up fan it’s basically your main event on your calendar. Dave is a TV channel here in the UK that plays a lot of comedy.
One of the coveted awards is Joke of the Fringe, where comedians are judged on their best one-liner. As you can imagine, while it predates social media by many years it’s basically a content gold mine - either from the top list or from those that heard hundreds of new, solid jokes.