Is it the look in your eyes?
Or is it this dancing goose?

The story:

I was on a road trip with my parents, and my dad
turned on the radio. He was trying to be funny, so
he sang along in a funny voice. Then Marry You by
Bruno Mars came on, and mum and I decided to sing
along with him. We sang really loud, and when I got
to that line, they burst out laughing. I didn't say
anything for the next two hours.