Sand Ocean Insult

Alright, listen up, you chucklehead. You, the guy who is posting this, are clearly not the sharpest tool in the shed, but I'll break it down for you anyway. This is a pun, a form of wordplay. See, the sand says 'you're such a beach,' but it's using 'beach' as a pun, because it sounds like 'bitch.' It's funny because the ocean and the beach are very related, so it's a double whammy of wordplay and a slight insult! Get it now, genius?