i prefer bowing. i'm also into japanese culture. i usually bow around japanese, chinese or korean people who are older than me. this is often an involuntary reaction. in casual situations and with people my age or younger, i usually go for a nod or head bob.
if forced to i will shake hands, though i have also resorted to having full or otherwise occupied hands at key moments. once i blatantly refused to shake hands with a guy who creeped me out. i feel grossed out if a cashier accidentally brushes my hand when giving me my change, so shaking hands is pretty high on my list of things that freak me out.
even worse was the time i went to shake someone's hand (a former high school teacher of my eldest sister) and meanwhile he was trying to hug me... seriously, who hugs a young woman they barely know?! i mean if it had been some kind of date scenario, maybe...but that was just weird.
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"Life can be very confusing...filled with good things and filled with bad things. But it's my life...and I have choices." -Amber Brown