When a single throwaway line from a cameo appearance generates more social media traction than most entire marketing campaigns, you know the moment has landed.
Florence Pugh's Yelena Belova delivered one of the most memorable lines in Spider-Man: Brand New Day when she compared the work of her New Avengers to Peter Parker's street-level problems: "This is small baby potato stuff, not big potato brain stuff."
That was all it took.
TikTok exploded with videos racking up tens of thousands of likes apiece, tagged under #spidermanbrandnewday and #smallpotato. Fan edits, reaction clips, and meme remixes flooded every major platform within days of the film's release.
The line's simple classification system can be applied to everyday problems, movie reactions, and larger crises, making it easy to remix into captions and memes. Marvel's official social media leaned in hard, posting promotional clips for the Thunderbolts franchise with the caption "big potato brain stuff."
The scene itself unfolds inside a Russian spa, which doubles as Yelena's workspace after being signed onto the New Avengers during the Thunderbolts ending. Peter Parker, played by Tom Holland, visits her seeking insight into a mysterious threat, hoping Yelena's history as a brainwashed Black Widow might offer clues. She tells him the problem sounds like "small potatoes" and that the New Avengers are concerned with much bigger ones. An alien invasion threatening the planet? Big potato. A neighborhood-level villain hijacking civilians? Not worth the call.
Pugh's Yelena shows up twice in a small but useful role, bringing comic relief while helping piece together clues and giving the film a clean link to the New Avengers. More importantly, those appearances serve an actual narrative purpose, providing Peter with critical intelligence on the Department of Damage Control.
The timing could not be better for Marvel's social team. Spider-Man: Brand New Day grossed $360 million over its domestic opening weekend, beating Avengers: Endgame's record for the biggest debut in box office history. Internationally, the film pulled in an additional $573 million, pushing its global total to roughly $932 million after a single weekend. The top four biggest domestic debuts in history now all belong to Marvel Studios.
Riding that wave with a meme instead of a standard press push feels deliberate. Marvel has a track record of inventive post-release promotion, including swapping the Thunderbolts title for The New Avengers on billboards during the film's opening weekend earlier in 2025.
Pugh herself appeared in a video ripping the old poster title off to reveal the rebrand. Leaning into "big potato brain stuff" follows the same playbook of letting fans feel like co-owners of the joke.
Online analysis has gone deeper than just laughs, too. Fans on X have argued the "big potato" joke reveals something essential about Yelena's character, noting she constantly uses humor and sarcasm to avoid talking about what she's really feeling, whether it's Natasha's death, her past as a Widow, or her place on the new team.
Pugh's next confirmed appearance is in Avengers: Doomsday, where the stakes should comfortably qualify as big potato territory. Brand New Day stays close to the neighborhood level while setting Parker up for that crossover and Avengers: Secret Wars. The film continues what looks to be a renewed franchise-wide focus on meaningful post-credits scenes guaranteed to pay off, following Captain America: Brave New World, Thunderbolts, and Fantastic Four: First Steps.
For now, a vegetable metaphor deployed inside a spa by a deadpan Russian assassin has become the MCU's lingua franca. Everyone, apparently, understands potatoes.
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