STM
Stop Tailgating Me, a bumper sticker often found on vehicles of slow ass drivers. Seeing this bumper sticker makes you want to tailgate them even more than if they didn't have the sticker at all, basically it's superfluous.
Dude, that trucks got an STM sticker on it, let's tailgate 'em!
#stm #tailgate #driving #slow drivers #bumper sticker #tailgating
by SiERRAAAAAAAAAAAAAA February 02, 2008
Top Definition
STM
Smiling To Myself
To use instead of lol when you actually are not lol-ing and just smiling to yourself.
Msn Dude: Hey man, I lost my shoe today...
Msn Man: stm, you're a jackass
#lol #stm #msn #chat #icq #internet #abbreviation #rofl
by Mandeep June 17, 2007
STM
Secret Tumblr Message from one blog to another. It's cryptic and personal. It's specific to the Tumblr.com mini blogging site
STM: I saw what you did there.
#stm #s.t.m #secret #tumblr #message
by KarsonK August 02, 2011
STM
Sexually Transmitted Miracle

or and unwanted baby.
You're a STM
#stm #smt #sti #std #babies
by Miow_epicness July 21, 2010
stm
stm means short term memory

jack : i forgot yersterday the jokes you told me
ben : you stm is it?
#stm #short #term #memory #ltm
by lianms April 12, 2009
STM
Smiling To Myself.
A more realistic saying for when someone says something funny over the internet as opposed to lol because no one is really laughing out laughing.
Gemma: I just fell down the stairs and broke my legs.
Kayleigh: STM
#lol #lmao #rofl #lmfoa #lolz
by kaygem October 05, 2008
STM
"Speak to me", Used as a greeting when answering your phone
Phone rings!

Daniel: "STM!"

John: "Hi Daniel, I was just ringing you to ask you if your going to the patch tonight?"
#speak to me #stm #sty #speak to ya #let's chat
by Stabber of loughshinny July 04, 2009
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