mail snail trail
After having long vigerous sex with a girl from behind one's testicals at most times become coated with the womans juices, the man then pushes the girl flat onto the bed then drags his balls from her ass to the back of her neck leaving a slimy trail.
after pounding eustice's vag from behind now after several hours, larry realiseing that his nuts are drenched in her snatch slime he forced eustice flat on the bed and gave her a good ol " mail Snail Trail "