Heh, your uncle sounds like a pretty cool guy! But just so you know, I have an equally encyclopedic knowledge of TOS (
The
Original
Series, as in the original Star Trek), and there is no such episode that you're referring to.
People think they know Kirk (hell, they think they know everything about TOS) just by what they've heard in stereotypes, but if they actually watched the show and got into it, they'd find that their impressions were wildly inaccurate...