Originally Posted by
LondonElite
If you hold a Z passport and you are entering Z I would find it strange and unusual to be asked for the purpose of your trip. Depending on your willingness to make a point, for most countries you could just say "none of your business, you have established that I am a citizen of this country and you cannot deny me entry."
I'm an American citizen and I get asked all the time in SFO "What was the purpose of your trip?"
I learned the hard way once that being snarky with Immigration in the US is not a ticket to an easy entry.