The belief that tiger penis increases virility is just an old wives 'tale that has been grabbed hold of by medicine peddlers out for a buck. Because this is a "sensitive" topic for both Chinese and foreigners, most people haven't been interested in actually finding the truth. And so bull penises are being taken for tiger penises, and the foreign media is launching caustic attacks.
但是想必虎鞭在中、外都太過「隱晦」了，因此大部分的人並不想追究真相，也造成牛鞭假冒的虎鞭，卻被外國媒體振振有辭地攻擊，難怪張賢哲要說「培利法案」是個「烏龍報復案」了。