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Bad-Ass, Sexy Mother-Fucker
That dude Jonathan is one BASMF!
by JayKayDub January 14, 2011
Lucius Malfoy.

Badass Sexy Mother-fucker.

A term used to describe people who are not only badass but who are also sexy.

This term could also loosely apply to Bellatrix Lestrange.
I wouldn't do that if I were you. The BASMF (meaning Lucius Malfoy) will come after you.
by Theonethatlikesharrypotter. March 13, 2011