The context of the following conversation is Alex saw a tiger at the zoo and realized they had never seen a tiger before.:
Alex says Wow! What is that thing! It's scary as heck!.
The friend responds That's a tiger! Are you joking? Have you never seen a tiger before?.
Alex responds Oh my gosh, I guess not! I always thought tigers were those little cats that have tufts on their ears! That thing is terrifying!.
The friend responds Lynxes? Wow, unbelievable. I can't believe you've never seen a tiger before. You must have been born under a rock..