inspired by a conversation that myself and the "welsh wizard" monpot are having, what is your gastronomic equivalent of sniffing permanent markers (feels so good but mummy said it makes your brain funny)?

nominations on the list so far are:

crunchies: your gums will be left in shreds by the oh so tasty honeycomb centre.
walkers SUPER MAX FLAVOUR POWER range of crisps: so much flavouring that they take the roof of mouth off.
similar discos: gave monpot "chapped lips"

post your nominations for most painful food to eat below. i'm not allowing rocks, porcupines or poison.