If used in the form "That person has a high PSI". It is a sexual reference saying there ass or another part of the body where a penis can be inserted is capable of taking alot of pressure, or quite a hard pounding. Can also reference to the largest penis they can fit in their ass before the pressure gets to high and rips it.
(Penis(Surface Area)/Vagina(Surface Area))*((Penis(Circ)-Vagina(Circ))/100)*Penis(Circ)*Penis (Length)*(Penis(Length)-Vagina(Depth)/100))
Jew Penis: Length: 10inches Circumference: 9.42 inches Surface Area 94.2 inches squared
Twelve Year Old Vietnamese Girl: Depth: 3.5 inches Circumference: 3.14 Inches Surface Area: 10.99
8.6*.063*94.2*.065 = 3.31
In this example, the Jew Penis would feel the pressure of 3 normal pussies on his erect penis during intercourse. This would be amazing.
No children were harmed in figuring out this information.
I really want to rail that girl over there and take her for a ride. I feel like my boost meter could hit over 10 PSI.
So what do you think our PSI would be baby?
I may not be that big, but I'm an expert with Maths and can tell with your small vagina there would be plenty of PSI.
OH MY PSI. It's over 9000!
Fur and Loathing in Miami: That fox and cat managed to achieve 12 PSI through strategically places holes in their fur suits.
That can't be right, my PSI is reading less than one with an Asian girl. Shit, I should go to the doctor tomorrow.