In the middle of the episode, when the "repaired" project is being revealed, it is visible in a freeze frame at 11:41 that Henry (Jace Norman) failed to button his button fly blue jeans.
Earlier on, two hobos sing "I Found A Way" (the theme song of "Drake & Josh"). At the end, Ray, Charlotte, Henry, Jasper and Schwoz (none of whom ran across the hobos) sing "I Found A Way" as well. There's no explanation for why this song is on everyone's mind.
No explanation for Ray suddenly abandoning the wheel of his moving car and jumping out.