How Bad Can I Be is the Once-ler's musical number from Illumination's Dr. Seuss' The Lorax (2012), performed in English by Ed Helms. The song plays as the character industrializes Truffula Valley, and its cheerful tone made it a lasting shorthand for cartoonish greed. Clips of the track, including dubbed versions like this German take, spread through YouTube edits and TikTok memes where creators pair the boastful chorus with scheming characters. It endures because the bouncy delivery makes self-serving behavior instantly recognizable and funny.