You don't actually have to EXPLAIN anything. Just don't lie.

"Sooo, are you going out on a date?"

"I'm going out."

"Who's this person you're having drinks with?"

"A person."

"Are you seeing anybody?"

"I see a lot of people, every day -- can't swing a dead cat in L.A. without hitting one."

"Why are you going out looking like that?"

"Because I'm hot. It's how I look."

"Do you know when you'll be back?"

"Yes."

It's in the book there somewhere -- if he says 5 words, you respond with 3.