San Antonio to Houston wasn't too eventful, though someone must have took a bigger than usual dump. The warning I got from a friend who use Greyhound a few times a year to visit family around Texas was to sit as far away from the bathroom as possible, but really if anyone uses the thing the whole bus is going to smell it for 30 minutes. This one lingered for at least an hour and who knows how much longer after we got off the bus.
The return trip was a less smelly, but more memorable. I ended up sitting next to this huge Mexican dude (at least I assumed as much from the huge Mexican flag on his shirt) whose arms were covered in tats and was wearing a surgical mask. Guy sat down next to me, didn't say a word or make eye contact with anyone for the entire trip. Just sat there like a ing statue. Then there were four or five nuns that were the chattiest group of people you ever saw. There were two that were sitting together who spent the entire time talking very loudly to each other. The others ended up talking the ears off of the people that who say next to them, probably thinking that sitting next to a nun was safer than ending up next to a massive serial killer looking guy and then ended up trapped because there's no way to tell a nun to shut the up without feeling bad about yourself.