This a episode from SpongeKid SlightPants: Lunch Hour.
The Lunchroom becomes dark when the Lunch Lady won't fix the lights.
(The gang is talking about squirrels when the light cut off again)
Squidward: The lights have turned on again! Thats the 5th time this week!
Sandy: Calm down Squidward! We just need to wake that hag Lunch Lady up.
Patrick: I have just the thing. (Patrick picks up his lemon and throws at at the Lunch Lady's eyes)
Lunch Lady: MY EYES!!!!!!!!!! (Walks over to Spongebob's table) Which one of you barnacle heads threw this at me.
Patrick: (points at Squidward) He did it.
Squidward: No! No! No! Wait.... (Lunch Lady throws Squidward at lights and lights turn on)
Spongebob: Hey the lights are back on! Now what were you saying Sandy? (Squidward's plate falls and the mess spells out "THE END!")