Ton-Tongue Toffee

Notes

• What the Weasley Twins did to Dudley by enlarging his tongue was despicable, but they saw it as justice for Harry against a "great bullying git" (GF5). That was not the first time that Dudley was targeted by a wizard sympathetic to Harry, since Hagrid once zapped him with a pig's tail jinx (PS4). These episodes of Transfiguration made the Dursleys resent Harry even more, and to blame him when Dudley was attacked by a Dementor even though Harry saved him with his Patronus (OP1). Also the fat-shaming of Dudley is rather more cringeworthy because Petunia had put him on a lettuce diet while Harry had four cakes hidden under the floorboard of his bedroom (GF3).
• Soon after leaving the Dursleys in Goblet of Fire, Harry and the Weasleys stayed at the Quidditch World Cup campground where Lord Voldemort's Dark Mark appeared in the sky: "a colossal skull, comprised of what looked like emerald stars, with a serpent protruding from its mouth like a tongue" that resembled the statue of Salazar Slytherin in the Chamber of Secrets (GF9). Dudley's predicament with the Ton-Tongue Toffee seems to foreshadow that scene, with "Dudley's tongue lolling around like a great slimy python" as Harry left Privet Drive by Floo network "in a rush of emerald-green flames" (GF4).