Big McThankies from McSpankies originates from the animated Nickelodeon series Jimmy Neutron: Boy Genius, specifically featuring the character Skeet, a dedicated fast-food employee at McSpanky’s. The phrase is Skeet’s overly enthusiastic catchphrase used when serving customers, delivered with a memorable, rhythmic cadence. The meme gained popularity on platforms like Vine, YouTube, and TikTok due to its surreal and nostalgic energy, often used to mock extreme corporate friendliness or to punctuate a situation with absurdly high levels of gratitude. It remains a staple of internet culture for those who grew up in the 2000s, frequently appearing in remixes and surreal meme compilations.