(Strip Number 1422, Original Publication Date, 17 February 1989)
Panel 1: As the kids jump on the couch and frighten their cat into running away, Michael tells them to stop it because he's had enough.
Panel 2: When Richard cheerfully does a buck and wing on top of a dresser drawer, he tells them to cut it out because he means what he says.
Panel 3: As Christopher tries pulling Richard's pajama bottoms off, Mike angrily declares that he's had enough of their monkey business and wants them in bed NOW!!
Panel 4: As they continue to be aggravating little shits taking advantage of the excuse "He's just a kid too so we don't HAVE to listen to HIM!!!" (and also Mom just lets us wear ourselves out because Papists like her don't discipline their children properly anyway) so they can have big fun jackhammering a bed frame into sawdust, a defeated Mike thought-bubbles that there's not much point in talking like an adult if you don't look like one.
Summary: The fun part is that we can contrast this with all the times when adults are bad for not admitting that a twelve year old boy like him looks like a grown up and should be treated like one and laugh at his being utterly lacking in any ability to keep track of the nonsense he says. Also, we can expect notes that are a passive-aggressive mailshot aimed at the neighbourhood kids for not respecting Lindy's autoritah.