Top Definition
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
Mandeep가 작성 2007년 06월 17일 (일)
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!
SiERRAAAAAAAAAAAAAA가 작성 2008년 02월 02일 (토)
Secret Tumblr Message from one blog to another. It's cryptic and personal. It's specific to the mini blogging site
STM: I saw what you did there.
KarsonK가 작성 2011년 08월 02일 (화)
Sexually Transmitted Miracle

or and unwanted baby.
You're a STM
Miow_epicness가 작성 2010년 07월 21일 (수)
stm means short term memory

jack : i forgot yersterday the jokes you told me
ben : you stm is it?
lianms가 작성 2009년 04월 12일 (일)
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
kaygem가 작성 2008년 10월 05일 (일)
"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?"
Stabber of loughshinny가 작성 2009년 07월 04일 (토)

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