Выражение встречается в следующем контексте:
In fact, little medical research into lesbian sexual practices has been done at all--somehow, the fact that lesbians really do have sex with each other, and in many different ways, has escaped the attention of many in the mainstream medical establishment.
However, the idea that women require videotaped instructions to figure out the proper use of latex gloves or dams lessens the credibility of these movies as educational materials--and may strike some viewers as downright silly.

Заранее спасибо

А чтобы точнее отразить тему надо уже смотреть сами киноматериалы!