Top Definition
The act of performing anal sex on a woman (mud) while she is on her menstrual cycle (blood). Interchangable with "the Hermoine Granger"
The fuck bruh? Did you really do The Mudblood on her? You sick bastard.
#harry potter #anal #sex #hermoine #mudblood #mud #blood #secrets #prisoner #azkaban #goblet #fire #order #phoenix #half #prince #deathly #hallows
by Rebeccablackscrotum May 15, 2011
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