This guy on the train yesterday was determined to spread his legs as wide as possible and hog two seats. Even when I squeezed myself in between him and a more accommodating chap he wasn't giving an inch. Not for the entire trip!
The only way I'd forgive him is if he'd just had five hours of electrolysis on his balls, but given he was sporting a huge cheesy moustache I doubt he's heading down that path!
I know that guys spreading their legs on public transport is a thing that really annoys women... it seems like a hyper macho and really selfish thing to do. I've always tended to cross my legs and of course women are generally taught to keep their legs together (for a whole host of reasons, practical or prudish) but even in guy mode I've never seen the need for sitting with legs akimbo. Maybe it has something to do with staking out territory... or providing relief for a massive schlong and/or balls... something I personally have no experience with!!