A misspelling of "Voldemort". Voldemort is the primary villain in the Harry Potter series.

Some fans of the books tend to insert the additional "R" often, probably because of its location on the keyboard next to "E". This frequent error is terribly irritating to certain pedantic HP fans; the resulting situation is terribly funny to relatively average fans like me.
But I thought Voldermort was Harry's grandfather...?
by Kalondo May 23, 2005
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The sexual art of pulling out just before you ejaculate, and blowing your load* all over her chest, screaming AVADA KEDAVRA! If you are agile enough to fuck whilst standing up, she may fling herself backwards and die. Bonus points if she receives a legitimate injury.

*Works best with green cum.
We thought our sex life was getting boring, so we decided to take up Voldermorting. She broke three ribs the other day, I'm well chuffed!!
by A fucked up gamer. September 23, 2015
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To punch someone in the face so hard that their nose disappears, causing them to resemble Lord Voldermort.
Guy 1: Dude, what happened to Mercedes' nose?

Guy 2: You didn't hear? She was in a fight and caught a Lord Voldermort
by Gilbydude September 14, 2011
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