"Stop!"

I can't be sure about this because I haven't yet learned any parts for it, but I don't think "Stop!" resolves.  Musically, this provides the same feeling as the lyrics at the end:  "Make your mind up / What you're gonna do about us."  The singer/speaker is left waiting for an answer in the same way that the listener is waiting for a musically satisfying conclusion.

In thinking about the song again to-day before writing this post, I also started wondering whether the title is meant to be similar to the Beatles' "Help!"  They're both single-syllable imperatives followed by an exclamation mark.  I'm not sure if the chronology allows for this though.

"Stop!"

The first line of the second verse in "Stop!" is "So you talk better than me."  The flawed grammar demonstrates the singer/speaker's self-acknowledged poor grasp of language.  It should be "You talk better than I [do]."