1 definition by Leonardaturtle
a sister (usually biological) who is also a bro, displaying all or some of the characteristics of a bro.
Not to be confused with brosis which is an infectious disease.
Not to be confused with brosis which is an infectious disease.
My sister is totally a bro-sis.
Last night my bro-sis had a party at which she wore a polo shirt, drank beer from a red plastic cup, and shouted "WHOOOO" loudly several times.
Last night my bro-sis had a party at which she wore a polo shirt, drank beer from a red plastic cup, and shouted "WHOOOO" loudly several times.
by Leonardaturtle February 23, 2011