The over-reaction is character as foreshadowing: a real, lifelong
sore-point that drives Buggy’s psychology. The chapter even goes out of its
way to escalate the taboo’s stakes from “crewman killed” → “village destroyed”
within nine pages, making clear this is a load-bearing psychological tell,
not just a clown’s running gag.
The payoff
The full backstory — that Shanks teased him about it on the Roger Pirates as
a cabin boy — comes much later, but the seed is here and is structurally clean.
The taboo persists through the entire series; even in the Final Saga, as a
Cross Guild figurehead Yonko, Buggy is still mortally insulted by nose
references. Oda built the gag to outlast the character’s narrative function.
Earliest known caller
Recurring gag spotted early; full backstory (Roger Pirates apprentice with
Shanks) revealed in Loguetown / post-skip flashbacks.
Why this matters
A textbook example of Oda using comedic over-reaction as psychological
foreshadowing. The rule for reading One Piece: when a comic trait is
disproportionate to the in-world stakes (a pirate captain killing his own
crew over a verbal slip about his nose), the trait is load-bearing and has
a serious origin. Apply the same lens to other “compulsive trait” characters
(Hancock’s pride, Crocodile’s hidden past, Mihawk’s stillness) — the
disproportion is the seed.
Note also: the seed-to-functional-payoff distance is two chapters (Ch. 9 → Ch. 11). Oda is calibrating the reader fast — the gag is established and then immediately weaponized — which is itself a tell that the full backstory payoff (Shanks era) is being saved for a much longer slow-drip.
Crew-wide pattern
The Ch. 12 Mohji cognate establishes a crew design principle: every Buggy officer has a sore-point vanity-trait. Reading the rule forward, future Buggy-crew officer introductions (Cabaji etc.) should each get a similar vanity-trait gag-trigger. Track in Buggy Pirates and Buggy Officers Vanity Taboo.