A fork of Rural Dictionary
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!
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
Standard Topless Makeout. The go to hookup situation for virgins, girls playing hard to get, Catholics, or conservative Protestants.
Dude 1: "Did you get any action last night with Kate after you left the party?"
Dude 2: "No more than an STM. She goes to church every Sunday and she may be trying to date me."