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The Name derives from The Junkers Ju 87 or Stuka (from Sturzkampfflugzeug, "dive bomber") wich was a German dive bomber and ground-attack aircraft during WWII. during Sexual intercourse the Male part stands up, while the other part is laying flat on the belly. The male part then proceeds to haul like a siren while jumping on the counterpart. The Stuka is only successful when a Penetration happens.
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