peeping Tom

peeping Tom -- соглядатай; человек с нездоровым любопытством, подглядывающий за купальщицами, заглядывающий в окна и т. п. чрезвычайно любопытный человек

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Origin
Leofric, Earl of Mercia and one of the most powerful men in England during the first half of the 11th century, imposed certain taxes which his wife, Lady Godiva, patroness of Coventry, asked him to remove. He promised to do so if she would ride naked through the city, which she accordingly did in 1040. This story, first recorded in a 13th century history, was subsequently embellished. A 17th century addition was that the people of Coventry stayed indoors behind drawn curtains in order not to offend her modesty, but that an inquisitive tailor called Tom peeped out, whereupon he was struck blind or, according to another story, done to death by more upright citizens. Thus peeping Tom became the name for a voyeur. (Expressions and Origins)

see also
[nosey Parker]
[poke one's nose in sth]
[любопытная варвара]
busybody