You gotta be a baby boomer to understand this joke
An elderly couple came back from a wedding one afternoon and were in a pretty romantic mood. While sitting on their loveseat, the elderly woman looked at her companion and said, "I remember when you used to kiss me every chance you had."
The old man feeling a bit obliged leaned over and gave her a peck on the cheek. Then she said, "I also remember when you used to hold my hand at every opportunity." The old man again feeling obligated reached over and gently placed his hand on hers. The elderly woman then stated, "I also remember when you used to nibble on my neck and send chills down my spine."
This time, the old man had a blank stare on his face and started to get up off the couch. As he began to walk out of the living room, his wife asked, "Was it something I said, where are you going?" The old man looked at her and replied, "I'm going in the other room to get my teeth!"