The song is told first-person style through the eyes of a family man, who describes everyday domestic life in the verses of his song. However, this is all background, as the main subject of the song is about his recent adulterous relationship with a woman named Margie. The two, as the song's title implies, had a sexual liaison at a motel called the Lincoln Park Inn.
The protagonist regrets his affair, and states that he has made a promise not to cheat anymore. However, he still harbors deep temptation for Margie ("I know why she's there/I've been there before"), and — still having her telephone number — knows full well that she is often a client at the inn and is probably there as he speaks.