A magic wand waved by a fan of a particular show to make accusations that that show ripped off another show disappear.
The line originally appeared on a South Park episode in which a foolish character kept shooting down another's ideas, dismissing them as ones the Simpsons originated, a point he made by annoyingly shouting "Simpsons did it!" The character was straightened out by a wiser character who explained that the Simpsons itself borrowed from other shows--the implicit premise being that everyone steals so no one should complain about it. The unfortunate result is that many people who look to South Park to know what their opinions are, now think that it's foolish to call people on plagiarism.
Now the line can be used more generally to ridicule anyone who points out that an episode of one show is similar to an episode of an older show.
The line originally appeared on a South Park episode in which a foolish character kept shooting down another's ideas, dismissing them as ones the Simpsons originated, a point he made by annoyingly shouting "Simpsons did it!" The character was straightened out by a wiser character who explained that the Simpsons itself borrowed from other shows--the implicit premise being that everyone steals so no one should complain about it. The unfortunate result is that many people who look to South Park to know what their opinions are, now think that it's foolish to call people on plagiarism.
Now the line can be used more generally to ridicule anyone who points out that an episode of one show is similar to an episode of an older show.
Simpsons fan: Hey, that South Park episode is awfully similar to an episode of The Simpsons that aired last year.
South Park fan: Yeah, whatever. 'Simpsons did it!!! Simpsons did it!!!' That's what you sound like. Ha ha!
South Park fan: Yeah, whatever. 'Simpsons did it!!! Simpsons did it!!!' That's what you sound like. Ha ha!
by Fusion Hungry Bagel Planet September 21, 2009
Get the Simpsons did itmug. by jjon April 13, 2007
Get the did a britneymug. by John Smith the third April 30, 2006
Get the simpsons did itmug. 
by Dane Side March 17, 2003
Get the did emmug. a phrase used primarily by douchebags at the end of a sentence to make an otherwise normal statement seem mysterious, or to cast doubt on a claim made about a person.
by spitwell January 3, 2010
Get the Or did he?mug. To have something shoved in the mouth. To have an object or objects quickly thrusted at your oral cavity either on purpose or by mistake.
Also can be used to describe something that will be met with the mouth.
Also can be used to describe something that will be met with the mouth.
He was so hungry that that we all knew that sandwhich in his hand was going to be mouth did.
The innocent bystander got mouth did by that by that flying golf ball.
The innocent bystander got mouth did by that by that flying golf ball.
by GIRTH GROUCH October 14, 2008
Get the mouth didmug.