"It's a long story..." Stall the catgirl until you come up with something good.

You start to invent an explantion, but you find yourself distracted by the the catgirl's lithe figure. Your pole starts to stiffen in your jeans as you stare at her. The catgirl notices you're no longer interested in talking. "Like what you see?" she purrs, walking over and placing a paw on your chest.

You smile at her. "How did you know?"

The catgirl places a second paw on you, this one on your crotch. "I'll give you one guess."