The word gull bruh was invented for the frat boys, typically named Brad or Chad, on spring break. They are often seen carrying Yeti cups full of White Claw, wearing Ray Bans, and other typical frat attire, maybe khaki shorts and polo shirts. The word “gull” refers to seagull or “rat of the sea” which resembles frat boys during spring break and “bruh” is just bruh.This word is never be used by frat guys but instead, used by others to make fun of that genre of boy.
skater boy: dude did you see that gull bruh? yeah he totally listens to mo bamba and shotguns white claws while hitting his mint juul.