Dont bag on me for asking but whats a kook and whats a grom in surfing? and what makes you a kook or grom?

a kook is a poser who turns up in the beach car park wearing a top of the range wetsuit & carrying a spanking new surfboard, checks the surf for an hour before actually going in, when it is so obviously pumping, then when he enters the water proceeds to splash around like a drowning rabbit

a grom is a kid surfer, skater, or snowboarder

someone that goes to every surfing or skateboarding event to hangout, compile pictures, start conversations, & generally be seen with real surfers or skateboarders