It's a big paradise, when you love in a parking lot

The story:

One day I tried to tell my roommates that I had the "Love in a parking lot" song, and nobody had any idea what I was talking about until I tried to sing it. I figured if you were getting some love in a parking lot, it would be a big paradise, right? It made sense to me! And then I thought maybe it was "there's a big pair of lights over the parking lot," but I was wrong again. To this day when they hear the song, my roommates laugh at me.