Optimus Prime is the Autobot leader from the Transformers franchise, which began as a toy line and animated series in 1984 and later became a major film series. His deep voice, most closely associated with Peter Cullen, is instantly recognisable and often clipped for short reaction sounds. This line has spread through meme edits and soundboards because the question works out of context as a direct challenge to the viewer. It remains popular for stare downs, fourth wall breaks and any moment where a character seems to notice the audience watching.