(Strip Number 5140, Original Publication Date, 29 May 1989)
Panel 1: As he leaves his room to head for school for the day, Mike is angry about the insane and inconsistent punishment he's received and slams his bedroom door shut.
Panel 2: As Elly makes lunch for the kids, the fact that Mike is angry enough to slam every door he encounters shocks her because the stupid moron is crazy and still thinks that his reaction should have been instant obedience and craven gratitude for being corrected.
Panel 3: She watches as he slams the back door shut.
Panel 4: Since it angers her that her stupidity angers her children, she yells "A bit testy this morning, are we?" at the back of his angry head.
Summary: Given that Elly is fucking nuts on top of being stupid and full of shit, it will always confuse and anger her that people aren't especially grateful to be subjected to arbitrary nonsense.