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An abbreviation for "shut your dirty little mouth."
Everytime I talk to Joanna, I need to tell her "SYDLM" because she never shuts up.
sydlm by branchness April 17, 2007
Related Words
sydwm sydm SYWM SDWM Sdwmfr sydam sydamys sydim sydlm Sydmao
abbr. "Shut your whore mouth". Often used in IM, and texting.
OMG! SYWM and stay away from by BF!
SYWM by paleoderek July 29, 2009
Shut your damn mouth
Dude 1: Hey, tell ur mom i want a refund for last night.
Dude 2: sydm
Dude 2: lmao
sydm by Cait :D October 8, 2006
Sydmo is usually a nickname for a girl named Sydney Morris. The girl is meant for a boy named Garet Tetreault. They're meant to be the most perfect couple in this world, so they are. Garet is an individual who is meant to make "Sydmo" as happy as possible, and can love her more than anyone else on this planet. Sydmo, is there, to be a queen, Garet wanting to treat her as royalty. They do absolutely eveything, and are possibly also the happiest couple in this world. They've made up the fact that Garets a dork, and Sydney's a whale. A Dork is a whales penis FYI, so it's meant for laughs.

Sydmo, is quite possibly the most beautiful girl on this earth, and without a doubt the most amazing. She's going to marry Garet Tetreault, and have 2 beautiful kids.

Garet has a poem for her, soon enough, when Sydmo shows him his suprise.
Sydmo was MADE for Garet, I swear.
Sydmo by GarebearloveSydmo October 14, 2009
SYNWMH--

S- snap

Y- your

N- neck

W- with

M- my

H- hands
What the fuck dude
Im gunna fucking SYNWMH
SYNWMH by LoneMarine July 27, 2009
"How can I make it up to you" the boyfriend ask and the horny girl replied "sydim"
sydim by Jesuslovesmeh May 30, 2016