Beach Brain

When one has spent too much time at the beach and feels lazy and tired due to overexposure to the elements.

"Bruh, I spent all day at the beach chasin' them swells and now I have beach brain. I can't even think straight, hombre"

brain beach

when someone is thinking up a fantasy in their head

When your mother nags at you to do something and asks the trick question, " Are you hearing me clearly?" You reply, "Oh what? Sorry. I was at my brain beach."