The ring or stain left on
the penis on withdrawal from the anus of your partner. The official "depth mark" is the one closest
to the base of
your penis and must be at least on 50% around the girth.
Man1: "Dude, I bummed this whore last night. She was so slack, I've never gone so deep before. I was so
impressed I have left the depth mark on,
check it out"
*Man1 drops pants, Man2 takes a look.*
Man2: "Jeeze, you must have been able to stick
your balls in!"