I just got a new colleague. He is from another country, where it's customary to do things that we don't do in an office, and it's just too much for me.
He keeps his phone on full ringer volume, takes his personal calls at his desk and speaks super loud, flosses at his desk using his phone as a mirror, works in flip flops, without socks, and shakes your hand after massaging his bare feet, bangs on his desks and many other things that I find unbearable.
I could ask him to stop doing these things, but we are both new here and since other people don't complain (because they don't sit near him) I don't know how that would work.
There are empty seats behind me, I could sit there, but what reason to give? How to justify it?
EDIT: Why my question is different from other "loud coworker" questions: I actually have a choice about sitting somewhere else.