Care to explain about "not having slang"? From my observation adoption of english (and it's slang) is mostly due to "verbal colonialism" - pop culture mixed wi

Care to explain about "not having slang"? From my observation adoption of english (and it's slang) is mostly due to "verbal colonialism" - pop culture mixed with "we work in english" spiced with "I'm cool so I'll drop this pointless slang from foreign language"...