脏话比谎话干净一万倍
[zàng huà bĭ huăng huà gān jìng yī wàn bèi]
'Swear Words Are Ten Thousand Times Cleaner Than Lies.' In modern Chinese context, although using rude words may not seem proper or appropriate to some people, here the nickname implies preferring rudeness rather than dishonesty, conveying an emphasis on honesty or perhaps frustration at encountering many liars around.