Weird last-train experience in Adachi! What do you even make of this?

So my husband was taking the last train on Friday night towards Adachi, and there was this random couple who were clearly very drunk.

Out of nowhere, the guy straight-up pulled his pants down and showed his naked butt to my husband!!!

The girl with him was either super embarrassed or laughing along…

Now we’re just sitting here wondering:

•Was this just drunk stupidity?

•Or could this be targeted behavior (like trying to provoke a reaction from a foreigner)?

•Is this something people actually do on last trains, or was this just a once-in-a-lifetime weird moment?

Genuinely curious how common this kind of thing is on Tokyo late-night trains and what the social reading of this would be.

by postobhaat