Every Wednesday and Sunday at 8:30 PM, there are live stand-up comedy shows at The Joker. Next to that, they also have some open mic nights. Sometimes they host karaoke parties or quizzes. Other than that, it's a fun alternative café to get away from the crowd.
They regularly have English speaking comedy artists, so tourists can enjoy it as well. Make sure to check the website or facebook page in advance to see what's going on. I love the alternative feel about this place, so it's great if you want to do what the locals do!
Be very early, seating is limited and if the place is full, you can't get in!