Hal thinks 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
In the sequence where Reese and Malcolm are playing ball in the street without Dewey, lighting equipment can be seen on the edges in the widescreen DVD, like in the episode where the scene is taken from. 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!