Shouldn't the plural form of GAFFEL be GAFFELER instead of GAFLER?
It should if it was regular.
What kind of language has an irregular plural for forks?
Well there's a group of words with a similar inflection, but it's not a big group. And common words often tend to be irregular,
What about my forks?
Gaflene mine(casual) -- mine gafler(formal) :D
Whats is wrong with "Gafler dine"?
If you wanted to put "forks" first you'd say gaflene dine.
Do all the nouns that have a el at the end change to ler when it's on its indefinite plural form? Like when sykkel changes to sykler.