Other mistake: When Carl is playing dance dance revolution in the bar, you can see that there are 0/2 credits in the game while he's playing.
Other mistake: When Jim Carey drives up to the Griffith Observatory, the sun is in the southeast for most of the scene (they are north of the building), but in a few of the shots you can see that the shadows are going northeast, meaning the sun is in the southwest, meaning it is late in the afternoon rather than early in the morning.
Continuity mistake: When Carl arrives to notify the girl that he likes Redbull, he is wearing a glow stick necklace. During the course of the next couple of scenes, the necklace changes positions and the color becomes stronger towards the end.
Factual error: When Carl is driving the scooter, he starts to swerve out of his lane until a car just off-screen honks at him. The lighting was such that the off-screen car should have cast a shadow into Carl's lane.
Answer: They had donated all their clothes to the clothing drive for the homeless. After all, they couldn't say no.
Brian Katcher