SCP-504 is a tomato species that looks and grows like regular tomatoes. If someone makes a bad joke near them, mature tomatoes that are undamaged and not rotten will fly towards the sound source at a speed of at least 100 mph. The Foundation is trying to get rid of any SCP-504 tomatoes in commercial farms nearby. The speed of the tomatoes depends on the joke's quality, not the language used. SCP-504 itself cannot speak.