Guys, if a girl slips up in conversation, the undertone being vaguely sexual, and you overreact does that mean interested or?

So I stopped by a business where I know the franchise owner. I've had a feeling for a while that he wanted to open his own business so I brought up that I am a manager elsewhere and there's room where we are.

Now for whatever reason when I mentioned there was room I slipped and said there's room underneath us (where I work it is as multi story building).

He had the funniest reaction going oohhh underneath you and a few other things. It's easier to see than describe.
Interested
Teasing
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Guys, if a girl slips up in conversation, the undertone being vaguely sexual, and you overreact does that mean interested or?
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