The topic of the question seems fully within the boundaries of the site, but the actual content is a bit not-quite-family-friendly.
Is this within bounds? I don't think we have any established rules.
[ My personal opinion is that the question is right on the boundary of "decent enough for the site" but very close to stepping over it - any more risque and it'd need to be closed or censored ].
As an alternate solution, we could have a meta-tag "adult-content" to allow filtering out such questions.