why didn't I just fib and say I was a carnivore 
Because you know us well enough to realise that we'd have found something else to take the piss out of?
What was that joke of Bob Monkhouse's? Summat about "People can tell I come from Kent .... at least I think that's what they say when they see me"
There is that but I think the phrase is "something as well" not "something else"
Coinkidentally I actually do come from Kent. Monkhouse though was Kentish Man (wuss), I'm Man of Kent