Well, I'm close; it's Elly trying to get Mike to do chores because he's bored only to have him play the "later" card.
Panel 1: Dainty Doll-Boy Mike, having tied Farley's legs together, says "Okay, Farl, you are hawg-tied!!"
Panel 2: The Elly who said that she couldn't be pregnant finally materializes on the scene so she can tell Mike that she won't allow him to torment the dog and asks him what's the matter with him; his response is that he's bored.
Panel 3: Her response is to suggest cures for his boredom: cleaning his room, sweeping the garage or vacuuming the hall stairs. Rather than point out that two of them are age-inappropriate and he can't clean his room to her standards anyway, he says that he'll vacuum the stairs....
Panel 4: ....later. Old-beyond-her-years Elly's reaction is the standard angry frown.
Summary: As is mine; the reason Mike does half the shit he does is that his parents are too freaking big a deal to deal with him.