As usual, I'm altering the words used to match my existing vocabulary, so feel free to go nuts.
Marge: Homer, are you licking toads again?
Homer: I'm not not licking toads.
Zidhgebzhail - In which double-negatives make for a more emphatic statement, so this construction requires a second clause using the dummy verb.
Maadzh: Hoemerr, dil nentef kwEntan-at?
Homer, are you eating food again?
Hoemerr: vil nentef Entanoi hynoi.
I'm not eating food not.
Spoiler: