Worked hard on my lap dance, no help from my hands

The story:

Listened to this in the car with my wife on the way to work one morning (I use to drop her off at a railway station close to work) and told her that "itīs really hilarious that they allow that kind of dirty lyrics on this radio station". She just looked at me and wondered what I was talking about, so I sang the version which I thought was the right one. She laughed out loud and sang the right version right back at me. =)