When one gets syphilis from a mutual girlfreind or prostitute.
Due to my very unbrolike behavior with regards to Adam's girlfreind, I cuntracted brosyphilis.
funny way of stating someone is your "BROSIF" or just going back and forth with someone doing multiple brosif jokes
guy1: sup brosif havent seen you in a while.
guy2: come on brosyphilis we hung out last weekend.