a broster is a combination of brother and sister together, instead of using just sibling: not actually used by actual blood related persons and usually used by close friends
Individuals with a love of skinny jeans & keg stands. A combination of bro & hipster which emerges during times of winning sports championships. Hipsters & Bros going beyond bromance to bridge the gap between fashion & fraternity.
Brian Wilson became the ultimate broster when he was punished for "having too much awesome on his feet." In an interview with Jim Rome on September 3, he claimed to be a "certified ninja" which he learned in a dream.
A Broster is a bro that tries to be a hipster. Generally they have their pants turned up once, or shorts just above the knee. Not too high. They wear hawaiian shirts and bright neon hats. They call themselves hipsters as well. Typically they are in frats. Brosters are not to be confused with hipsters.
Guy 1: That dude is a total hipster!
Guy 2: Nah man, He's fakin. Definitely a bro turned broster.
Guy 1: wow lame