i cannot agree more on this. 
we meet people from all walks of life now and then, i bet these
kinda attitude exists everywhere, even if you have a new workplace,
you will meet the same kinda people... maybe they're even just
joking but you took it the wrong way?
try to step in their shoes, be sensible, take it as a joke! and
dont worry everything will be fine!
alot of things happen from miscommunication, so u might want to
take some time and try and understand why they're doing this,
intentionally or just their way of being friendly? u might not
know, they turn out to be friends after all..