From the song by Sublime, "STP", the hot dope spot, the place you go to buy and do a shot, ("and if she made off with my last clean rig, I'm gonna kill that fuckin ditch pig", rig is a syringe) of heroin, which was what Bradley Nowell did. "My secret tweeker pad is now the hottest dope spot in town" It's the place to cop dope that too many people are finding out about. "I just take it nice and easy, don't want no sheriff breakin down the door to raid me"
It is used to describe a substance at....
Pressure: 1 atm; 760 mmHg; 101,300 pascals
Temperature: 0°C, 32 F, 273.15 K (kelvin)
It is often used to describe gasses.
At STP one mole of gas will occupy 22.4 liters.