"I am!" is the defensive response he comes up with. But it's not a very good one. Most of this answers aren't, so Tiger tries a little harder this time. Lots of quick thinking.

"Some guy told me you'd been here before. So, you're back! That's good," Tiger finally eeks out after such a poor explanation. Being stuck in this place without Bunny would've been real annoying. He'd have to make new friends and ehhhh, so much work.