a last name whose owners can usually be described as kick ass chicks who are still super hot and bitchin, but can also equal and/or out-do any man's skills relating to drinking, sex, sports, and life.
guy 1: "that bitch kicks ass, im just worried she might have been born a man."
guy 2: " no, she is just a bornemann."
pussy girl 1: "damn, i wish i were a Bornemann instead of just a pussy."
Pussy girl 2: "me too."