temptress (plural temptresses) 1  An alluring woman who seduces or exploits men. 2  A woman considered sexually attractive by men. Marilyn Monroe, the iconic temptress of the 20th century.
Sarcasm is difficult to understand when crossing any language barrier, but yes it is a popular stereotype that the Germans have little sense of humour. I work with several german clients and they don't put up with anything let's put it that way. Just Google it.
Furthermore, many Germans speak good English and like to show it off. Unless your German is flawless, they'll switch to English. German is a language that few learn for pleasure, and none because it is easy. Consequently, anybody who learned German enjoys a special status and a good measure of chic. Few people speak any German, and those who do are seen as exceptional people.