a person that really pisses you off. also nicely said when something bad happens. it is also a good word to say when referring to someone as they would be the scum of the earth.
that motherless dogfucker he should go fuck himself!!!

aww fuck( i stubbed my toe) motherless dogfucker!!

(got knocked out in UFC) Motherless dogfucker!!!
by johnny69drama May 4, 2010
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