when you're in someplace where there's a pure scientific talk, like a lecture, and the talk has to do with sex or with genital organs, and you have to wear that serious face and be scientific and all that shit! but all you can think of is how naughty the talk is!and you start having so dirty thoughts! and then you look around to see all those people wearing the same serious face, but you know how dirty they have reached in their fantasies! It's weird mind-stimulating situation.
the lecture was about erectile dysfunction, and it was such a sexserious situation!