ET Bilu is a Brazilian internet character presented as an extraterrestrial in viral footage that spread online, where his repeated advice to seek knowledge became his signature line. The phrase caught on in Brazil as an ironic slogan, shared in memes, reaction videos and social posts whenever someone needed to learn, check a fact or stop guessing. Its short, memorable delivery helped it survive beyond the original footage, turning a strange viral curiosity into a lasting joke about curiosity and common sense.