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"
by dj bradford October 1, 2015
Get the Beach Brainmug. by NIHILISM GURU November 7, 2023
Get the MJ Brainmug. by neonpunk22 February 21, 2013
Get the diarrhea of the brainmug. by anonymous May 9, 2021
Get the Run in the brainmug. by Pheobe98 February 13, 2021
Get the Flame brainmug. When a guy exhibits behaviors of a young boy whose frontal lobe has not developed even though they are at the age where it should be developed.
by potatoglassnoodle April 19, 2024
Get the boy brainmug. The acceleration of typing speed but deceleration of the accuracy in the words , content and context while texting due to thumbs fatigue although thought flows are exponentially high. Also known as FBST syndrome.
I was texting this girl come over to my room but instead I got hit with Fast Brain Slow Thumb syndrome and wrote “Come Over my hoes” so I blew my chances.
by Sassy Sheesh November 24, 2021