Wail of the banshee 

The cries emitted by a woman under intense sexual pleasure. Often mistaken by neighbours for incoherent babbling in some ancient, esoteric language.

Can often be remedied with a witch slap

News reporter: "Father O'Brien was last night called to an apartment in Canary Wharf after neighbours reported hearing what sounded like the wail of the banshee"

Wail of the banshee by pale fire October 16, 2008