Hals think that Malcolm, Reese and Dewey took a joyride and wrecked the cars, so he takes them to see a therapist.
Did You Know?
The therapy session is used as a way to tie the unconnected pre-title sequences into a plausible view of the family, as seen from the brothers' perspective. It's made clear that, although they all fight with each other, the brothers do actually love each other and are actually very protective of each other, especially from outside threats to their family dynamic. See more
Hal goes to grab a beer. He tosses the bottle cap on the counter next to a phone book with one bottle cap already on top of it. You hear the sound of the bottle cap hitting the counter, but as he walks back outside, two bottle caps are seen on top of the phone book and none on the counter. See more
I'm the one who spit in Dewey's cereal this morning. I mean...
I drank that milk! I licked the bowl! I hate you!