Listen to the sound clip Derp Yell from Epic Trolling Soundboard: Derp Yell Derp Yell This sound is from Epic Trolling Soundboard Epic Trolling Soundboard with the greatest trolling sounds ever including screaming, laughing, punching, buzzers, bells, social media, "I've fallen and I cant get up", "Leeroy Jenkins", "Bye Felicia", and many more. Go to the full soundboardwith more sound clips Search