It's just like gettin' fat, it contracts before and back.

The story:

Well, I was in my room with the window open and the song was on the radio. So I belted out my microphone and turned up my karaoke machine as high as it would go. As the song got to those lyrics, I was sure those were the right ones, so I sang at the top of my lungs and this guy that was driving down the street yelled out his car window, "Those aren't the right lyrics, you idiot!!!" I was so embarrassed.