Hobnobs topped the list I seem to remember.
Although Jaffa cakes were being discussed rather robustly.
(Pookie Bear had some very shiny foez, Thu 14 Nov 2013, 21:21, 1 reply, 12 years ago)

Jaffa Cakes aren't biscuits.

(dozers, do fuck off ur a nob m8, Thu 14 Nov 2013, 21:21, Reply)

They're called cakes, but are really biscuits.
It was discussed in the PUB! It is right therefore. Pedantic twat.
(Pookie Bear had some very shiny foez, Thu 14 Nov 2013, 21:24, Reply)

No, they are called cakes and are cakes.

(dozers, do fuck off ur a nob m8, Thu 14 Nov 2013, 21:25, Reply)

Although Wikipedia agrees with you.
Hmmm...
en.wikipedia.org/wiki/Jaffa_Cakes
(Pookie Bear had some very shiny foez, Thu 14 Nov 2013, 21:27, Reply)

They had to prove to HMRC that they were cakes so that they could retain their VAT status.
Cool story zzzzzzzzzzzzzzzzzzzzzzzzzz
(dozers, do fuck off ur a nob m8, Thu 14 Nov 2013, 21:28, Reply)

^^this^^
The distinction is easy. A cake goes hard and dry when it's stale. A biscuit goes soggy and soft when it's stale. Ergo a Jaffa cake is NOT a biscuit.
(Captain Placid 24/7 ball gags, brownie mix and clown porn, Thu 14 Nov 2013, 21:25, Reply)