“It was super intimidating”

I was on the top deck of the bus listening to music when two men got on arguing loudly enough I could hear them over my music and sat behind me. I turned my music off because I already felt very uncomfortable and after a few minutes I heard one say to the other “Watch and learn”. He then came and sat in the seat right next to me (there were loads of empty pairs of seats), looked right at me and had this weird grin on his face. I froze before saying excuse me and getting up, he said “Sorry, darling.” and let me pass. I went and sat near to the front and as they got off a while later he said something to me but I didn’t catch what it was. I felt like some prop in his macho bullsh*** and it was super intimidating. I have no idea what his friend was supposed to be watching and learning from.