Slow-Slow Beam is this dictionary's best case study in a single attack name drifting across a single fight. Confirmed against the real VIZ page scans (not just the raw bilingual corpus, which itself carries a documented +3 page misalignment for a stretch of Vol. 33 and needed manual correction), the exact same Japanese shout — ノロノロビーム!!! — gets three different English treatments within about thirty-five pages of the Franky/Fake-Franky beam-dodging sequence: "WHAT A COOL BEAM!" (p.176), a straight "SLOW-SLOW BEAM!!" (p.189), and "SLOW-SLOW BEAM!!" again as the punchline to a different joke on p.200 and p.211. VIZ clearly treats the line as a comedic beat that can be re-timed per panel rather than a fixed catchphrase requiring a locked translation — reasonable for a gag sequence, but it means the fruit's own attack name is less stable in English than in Japanese, where ノロノロビーム never varies once.
That instability sits in the same arc — the Davy Back Fight, one of the most joke-dense stretches of the whole series — as an SBS Q&A (Vol. 35, p.142) where a reader asks Oda directly whether Foxy's Slow-Slow Fruit is Logia, Paramecia, or Zoan, phrasing the question in exaggerated fan-desperation ("I can't even go to the bathroom until I know"). Oda's fandom has always cared about taxonomizing Devil Fruits with more rigor than the manga itself usually bothers to state on-page, and the Noro Noro no Mi — official answer: Paramecia — is a good example of a power whose classification became a running community debate specifically because its visual effect (light-based, intangible-seeming) reads more like a Logia to casual readers than its actual mechanic (touch-based, targeted) supports.
Mechanically, the fruit is also one of the series' cleverer "delayed consequence" powers: the beam itself travels at normal speed, but once it connects, the effect rewinds thirty seconds later, meaning victims spend the whole fight guessing when their own slowdown will kick in rather than reacting to it immediately. That structural cleverness never fully lands as danger in the story — Foxy remains one of the more comedic antagonists in the Grand Line's East Blue-to-Sky Island stretch — but the power design itself quietly anticipates "delayed debuff" mechanics that would become common in later shonen power systems.