Two other passengers seemed oblivious to what was happening as one had headphones on and the other could be seen stretched out sleeping on the seat. The couple appeared to stop grinding as the train pulled into Grand Central Terminal.
The video surfaced on social media and was posted by the viral Instagram account SubwayCreatures.
It was captioned: ‘Making up for a huge Yankee loss #subwaycreatures’.  

Some of those commenting slammed the person who filmed the video, while others were more concerned that the woman was not wearing shoes on the subway.