Friction coefficient zero substance stock! We challenged friends, a couple we approached on the street, to try shy substance stock using a large amount of lubricant, 1 liter! Lubricant like jelly as lube for the penis and vagina! Slipperier than imagined, was it an accident or intentional? What was supposed to be just substance stock ended up with friends crossing their line and having sex with internal ejaculation! A massive release of semen inside the slippery vagina!
