Balls to the Wall --- To go as fast as possible; max effort. Various internet sources claim the source of this phrase is actually benign. Supposedly, some vehicle's throttles were topped by a ball (going back before aviation even to the steam engine, in some stories). Thus, pushing the throttle forward as far as it would go--and thus asking for maximum power--was "balls to the wall."
"Тексты композиций «Love Child» и «London Leather Boys» и обложка альбома послужили основанием для слухов о гомосексуальности членов группы". (Вики)