It's worded ambiguously, and invokes thoughts about someone demonstrating its usability by defecating in front of a prospective customer: "Look! It works perfectly!".
Or maybe it's just me.
Еще классический пример (точное происхождение неизвестно, но моя мама клялась, что такая надпись действительно висела на двери деканата в МЭИ 70-х):
"Всем африканским студентам срочно сдать хвосты"
All African students are required to hand their tails to the dean immediately / All African students are required to retake failed exams (<- correct meaning in white, select to see)