What is Cum Gutters?
1.
on muscular/ripped guys, the lines on both sides that lead from the hips towards the groin. the indention is the cum gutter.
after jacking off to completion, jeff admired his seed dripping down his cum gutters and back on to his nut sack.
2.
the two dimples on girls lower backs
After fucking doggie style, he filled up her cum gutters.
See