[Bardsey]

Mummy Polar bear, Daddy Polar bear and Baby Polar bear walking through the snow and ice. Baby bear turns to his mum and asks "Mum, am I really a Polar bear?"
"Yes of course you are darling" replies mum
Five minutes later "Mum, are you really sure I'm a Polar bear"
"Course you are darling" replies mum again.
This goes on for a while til eventually the mummy polar bear loses patience and asks her offspring "Look, I'm getting a bit fed up with this now, why on earth do you keep asking if you're a polar bear?"
"Cos I'm F***ing freezing" replies baby bear!