heheheh..
yea u are right.. u see..
mallus in general have very less confidence and can be easily made to think that they are inferiors.they r kind and genuine people. this case is more affected if he/she came recently frm his/her home country.
thers another reason : we know exactly what u want to ask, most of the time after someone asks what nationality you are they want to know which state u come from. Thats why v cut to the chase and tell everyone v are from Kerala. :) its not because of hate to other states

and dude thers stupid,clever,bad,good, etc etc ppl in all the nationality. its not gud to concetrate on just a perticular group

iam a mallu and iam definitely proud to be an indian.
have a nice day friends