Auto Orgasm
I have an older full sized Oldsmobile with soft leather seats. The driver & passenger seats are independent of each other, this provides a 'slit' in between the two. I lube my cock & balls with baby oil, vaseline or hand lotion and thrust my cock in and out of this 'slit' between the seats until I blow a massive load! I move seats back and forth with their electric motors (the vibration is awesome)and get a special bonus as my balls slap against the soft leather. I only do this in the garage with the garage door closed. Gotta try it!