When a movie or TV series has such a perfect ending that you cream yourself accidentally upon watching it.
The Sopranos left me with dry pants, but the cumclusion of Curb Your Enthusiasm stuck me to my seat.
Esp. the orgasm in sex; can be used to describe the end or finale of anything in life from the end of a movie to someone's death.
I came home last night and my stupid roommate was loud fucking some slut in my bedroom. Luckily it was over fast and I only had to suffer thru the moaning of the cumclusion