The guy on a late night train who "couldn't hold it" any longer and peed in the bin.
The other guy who hopped the "staff only past this point" gate to go for a wee onto the tracks on the Piccadilly Line.
The man I caught taking pictures of my foot - he liked the small size and high arch, I had a ballet flat dangling so he got a good look.
The older man on the bus who looked furious when he had to let me into the window seat next to him. He kept looking at me with disgust. I may only have been in my 20s at the time, but I was walking with a stick & an obvious limp, had a bandaged leg and an "offer me a seat" badge!
When wearing my "offer me a seat" badge, the nice man who asked me to give up my seat for a pregnant lady. Had the grace to blush when I suggested he ask the badgeless but intimidating looking mountain of a man sat next to 5'3 me on the fold out seats instead.
The smug bastard cyclists lounging on the fold outs next to the big space for wheel chairs or push chairs. They had to be told to move to let a man who looked utterly exhausted sit down- he'd been pushing a little girl in a wheel chair, and for some reason it wasn't very high/had low handles he had to bend down to. In a heatwave. He looked too done in to ask, so someone else did.
The man who sat next to me in a four seater with a stinky egg mcmuffin. There were other seats available- with table trays. He got the hint from the specialty witherings he got from me and from my equally revolted friend.
The guy who squished up next to me in another four seater in an almost empty carriage. When I asked why he had to sit next to me, he explained he got travel sick with his back to the direction of travel. When I asked if he'd let me move round because I felt a bit claustrophobic sat like that in an otherwise empty carriage, he got offended and moved... to one of the many other empty forward facing sets of two seats. I didn't mind him sat diagonal and would've moved myself if he wanted the table but I didn't want a new friend.
The stupid, wittering woman who started getting on my regular commute train. She'd talk loudly to someone sat in a different set of seats- masks in hands during covid, the pair of them. I always sit near a particular set of doors to make it easy to change trains - it's the best spot for my exchange station etc- so ended up in her orbit, even with SD in effect. Wouldn't leave me alone, complaining I was always on my phone- yes, to avoid you, you inane bitch! Said it was my time to catch up on emails/do the online shop etc and she STILL kept going. Three journeys of that and I changed carriage to avoid her!