The 'My Brain is Full of Fuck' meme features an image of actor Jackie Chan clutching his head in a state of extreme bewilderment. Originating in the late 2000s on internet forums like 4chan, the image macro is used as the ultimate reaction to nonsensical logic, bad takes, or situations that are too bizarre to process. The phrase itself has become a staple of internet slang, representing the feeling of mental exhaustion or cognitive overload when faced with pure stupidity. Despite the image being a simple press photo, it perfectly captures the universal expression of being so confused that your brain effectively shuts down.