He doesn't need to know how to understand sign to be able to read annoyance.

attacking the locals
asking too many questions
talking about the internet
sympathise with Nazis

His perpetually furrowed eyebrows deepen as he tears off the paper, lets her read his scrawl - look it's not as easy writing with one hand without the other hand to hold the paper still - and continues his seemingly random list of sins on the next sheet.

stop pretending to be a God fearing American
question or subvert authority
dye your hair pink
take laxatives with sleeping pills

Struggling to think if he's missed anything...

making escape plans on the pager
using the pager in general
eyes and ears everywhere

any questions?