When you count down; "10, 9, 8, 7,6, we got booster ignition". Before starting your car to go to work.
I know it when you put the release of SSU Version 1-25 on your family calender.
I did that, but forgot to open retro doors and crashed into the car in front of me.You build a Delta Glider frame around your car, and wire it to shoot flames out the engines when you accelerate.
When you've browsed all 86 or something pages of the SSU dev thread-and LIVED!
When you get turned on by the female XR2 pilot