A silencer is a make-shift product to allow quiet, shameless defecations in public toilets.

A silencer is when a person bunches up a bit of toilet paper, and quickly places it in the water retaining part of the toilet bowl.

Thus, was a foreign object (fecial matter) drops into the toilet, there is no splash, and therefore no noise is created, allowing the person to walk confidently out without being given terrible terrible looks.

One downside to this is that it does not protect the person from their own gaseous discharge before the act of defecation.
Guy 1 - "Oh gosh, oh golly, I gonna crap myself,......, but I cant let anyone know im doing it, because,......., Ive been eating nothing but Indian curries and beans!, ......, oh god, its crowning!!!!!!!"

Guy 2 - "Hey buster, dont worry, use a silencer, its fine man, honestly, in Silencer we trust"

Guy 1 - "Than........ (fart)...... i gotta g-....... whoa nelly!"
by Caffo November 9, 2009
when a guy shuts a girl up by stickin his cock in her mouth.
by anonymous June 12, 2003
A call that cannot be returned with a comeback.
Nick: Adam shut the fuck up we're going to egg your house

Adam: I have just been silenced

Prime silencer example
by anon 12345 April 8, 2011
Deadly tongued scholar with 32 Cisco routers and an ARIN forensics pass. Beat me up for incorrectly installing Counterstrike on his patented 'linux training box' at Uni. Fair to say I have not kept contact beyond the 'yearly email'.
Gaz ''bastardly'' Ward.
by Martin3000 December 8, 2004
a guy named dave who threatens to kill you if you make noise while hes trying to sleep
"You guys need to shut the fuck up before i bury your fucking asses in the backyard."
by skp July 7, 2003
A dirty sock that is slid over the top of your cock to catch jiz, while jerking it.
1) Dude, dont touch that sock, I just used it as a silencer.
by Doodle sack November 6, 2007