Oh, it is funny, in the same way that the better jokes in sitcoms often are (when written well) - an awkward situation taken to the most ludicrously extreme of outcomes, and yet it could still happen as portrayed. It's a type of humor that falls neatly into Heinlein's explanation for why man laughs... so that we do not cry (pretty sure I'm paraphrasing).
I'd feel bad for analyzing the humor and killing the joke, but you didn't find it funny anyway.
and, too lazy to edit- what guy thinks of getting a phone to use specifically in europe? and all those anon comments were probably from her and her friends. omg- reallyy- he should have checked his phone, but still.
then again, this is why we have international every-damn-thing on my phone.