This high-intensity clip originates from the FXX sitcom 'It's Always Sunny in Philadelphia,' specifically the 2018 episode 'The Gang Wins the Big Game' (Season 13, Episode 9). In the scene, the eccentric Charlie Kelly, played by Charlie Day, is fully submerged in a manic state of Philadelphia Eagles fandom. Covered in green face paint and brandishing a sharpened piece of wood, he confronts a rival Minnesota Vikings fan with a terrifying level of intensity. Charlie's unhinged delivery of the line 'I'm gonna see if you bleed green!' perfectly encapsulates the show's signature brand of dark, chaotic humor. It highlights the absurdity of sports tribalism and the lengths to which Charlie will go to prove his loyalty. The scene has since been immortalized by fans as the ultimate representation of aggressive gatekeeping and obsessive brand or team loyalty. Commonly used as a reaction video, this meme represents situations where someone is being overly protective or testing another person's dedication to a cause. It fits perfectly for scenarios involving hardcore gamers, tech enthusiasts, or sports fanatics. Example captions include: 'Me when my friend says they like the rival team,' 'Checking to see if my new coworker is actually a pro,' and 'When someone claims to be a day-one fan but doesn't know the lore.'