silent duck 

The shape the hand makes while fisting.

Dude, your mom is soo freaky she begged for the silent duck and now my watch is missing

silent duck by Super Flynn December 27, 2007

Silent Hill 

An ingenious horror game developed by the company that brought to us all kinds of great games like Metal Gear, Teenage Mutant Ninja Turtles, Contra, Castlevania, and countless others......yeah that's right. Konami. ^.^
As this is defined there are 4 games in the series, each with different storylines (actually, the first and third SH's are linked). Whatever the case, Silent Hill represents some of the finest in psychological terror, complete with realistic graphics, disturbing background music and sounds, and a deep storyline provoking food for thought.

"I'm trying to rent Silent Hill 4 : The Room for PS2 but the bastard who has a copy from Blockbuster isn't returning it! >_< "
-me

Silent Hill by Dave September 15, 2004

silent second

When you poop without making a sound

I could hear a pin drop but yet didn't even hear your silent second.

silent second by IBAWS January 11, 2016

silent fiend 

Lowkey savages for fun and living life to the edge

"Hey did you see me break that window across the street?"
"Yeah, you silent fiended their house"

or

"That kid pulled the fire alarm at Target dude"
"Wow he's such a silent fiend"

silent fiend by Dannymous November 26, 2017

silent but violent 

A fart that is smelt but not heard. Smellier than a standard fart because energy is not dissipated by the buttock-flapping sounds.

“Jeee-sus! Have you just let one off?”

”Yeah, sorry. Silent but violent.”

silent but violent by King Kandy November 6, 2008

Silent Rave 

"Rave" or form of wild dancing party where all of the members listen to music through headphones on seperate portable music players. The players are all synchronized so everyone is hearing the same thing, but no outsiders hear anything, hence the "silent" portion of the name.

The police didn't bust the silent rave down the street because nobody complained about the noise.

Silent Rave by TrueKore August 31, 2006

silent but violent 

a fart that is like a silent bomb but instead of an explosion its a smell trained to kill noses.

Husband: Honey the dog did the "silent but violent" again.
Wife:I'll get the gas masks.

silent but violent by human hot dog,mmm hot dog... July 8, 2010