[Well, not everyone went to college, whether because they couldn't or chose not to. In Luke's line of work he's met a lot of people who haven't so much as stepped foot near a campus, so it's no surprise to him.

He also may be trying to place that accent, which is why he seems to hang on his words a little more than you'd expect from a stranger.]

You can never be too careful here. [He's not even going to judge his skepticism of the soda machine. This place was that fucked up.] The person who trapped us all here kind of has a sick sense of humor. Normally the stuff in the halls is safe, though.

[Normally.]