There’s something about the subway that tends to make it a hotspot for – how do we put this? – unusual activity. Perhaps it’s because the subway exists in an underground world that doesn’t quite feel like reality. Or perhaps it’s simply because people are weird, and it’s only when they all get crammed together in a tiny train carriage that it becomes noticeably obvious.

Either way, nearly all of us will have witnessed something that lingered in our minds long after making it back above ground. If you’re a regular subway user, prepare to nod knowingly when you’re confronted with these 65 images of the most bizarre subway sights.