My place?

[rebbonk]

I was in the bar when I started chatting to a midget.

"You seem like a nice and trustworthy person, fancy coming back to mine?" I asked.

"Looking for a good time, are you?" she said, smiling.

"No," I replied.

Spoiler:

"I've lost my keys and you're the only person that might fit through my cat flap."