I kind of wanted to press him on what that meant but it didn't seem appropriate. It just seems like an incredibly dismissive way to talk about something. I don't even like Buñuel all that much but there is still a lot more that you could, and probably should, say about his films then "oh, yeah, its surrealism!"
This is all foregrounded by how annoying I find it when people want to build up the illusion of being "artsy" or some shit. I get really visceral secondhand embarrassment from it. I mean, everyone just relax and we can listen to Led Zeppelin or something instead. It's fine.