Movies
Oh, how can I put this delicately? It's just that I'm not really in the vagina business.
— Peter · Peter's Friends

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker asks how to phrase something delicately, then describes sexual interest through the blunt language of anatomy and business. The proposed delicacy immediately collides with the chosen expression. The commercial metaphor offers an indirect way to decline while making the refusal strikingly undiplomatic.
Context reviewed