1 definition by Mr. Scrotes
A dirty wizard is the act of a male having anal sex with a female while she is shitting (as seen on macory.com). He then pulls his dick out and slaps her in the face japap with his dick while yelling "flippendo!" "expelliarmus!" or any other incantation mentioned in the Harry Potter series.
...Haha, now you have shit on your face after that dirty wizard
by Mr. Scrotes Apr 23, 2010 add a video