I was sitting in a seat facing the door, and a guy who looked in his 20s was standing at the door for a bit.
At one point I saw him looking over at me quite a bit, so I probably slightly frowned and looked at my phone, I should've moved seats really.
The next minute he shouted 'What the fuck are you looking at me like that for you fucking bitch!'
I just froze in shock and didn't dare look at him again. I hadn't been comfortable with his staring and wanted him to get the message, luckily he got off soon after at the stop but it was scary. What else could I have done in this situation?