You can find actual references to OG kush being refered to as original gangster as far back as 2005. And OG is nothing but slang for older/oldest, so saying it wishful thinking by tough guys is idiotic at best.

The oldest reference I have found to "ocean grown" is 2006, not including an alleged conversation that happened 14 years ago but was still remembered to this day... and somehow that conversation lead to being tagged onto a "kush" strain 4 years ago.

Now adays it has mostly adapted it self to being "ocean grown" based on southern calis love for it id guess, but if you hang around people that laugh at you for misnaming or not knowing everything about a strain then i'd say they might want to look into getting a life.