I suspect many English signs in Asian countries which use incorrect grammar, including slogans on T-shirts, have had input by foreigners here being mischievous. I particularly remember &quot;No coming on the grass&quot; as an English translation for &quot;Don&#x27;t walk on the grass&quot; on signs in a park in China 10 years ago, and wondered if the translation had gone through some QA by a native English speaker.