Another simile that Paisley uses is when he says, "Like the Ferris wheel goes around and around". Without even finishing this sentence, he is able to get the point across that time does not stop. He again brings summer into the picture by suggesting a carnival setting. It is easy to relate to the constant motion of a Ferris wheel, and since he keeps using analogies about the speed of summer, the listener is really able to understand how much the passage of time is affecting him.
The last summer-related simile that he uses is, "And just like the song in a seashell, you'll be stuck in my mind/ Bouncing around in my head". Knowing that seashells echo easily, Paisley explains that he will never be able to forget the girl that he is talking about. He will constantly think about her after the summer is over, as a song would echo throughout a seashell.