I have never seen that dress you're wearing
Or the highlights in your head that catch your eyes I have been blind
The lady in red is dancing with sheemy ka ching.

The story:

I was at a fast food place listening to the song playing in the background. I asked my husband if he knew the meaning to sheemy ka ching was. He looked puzzled. I sang the song to him, and he started laughing at me with tears streaming out his eyes. He then enunciated very slowly for me to understand it as "cheek to cheek".