While porking your lover at the top of a staircase, you pull out right before ejaculation, donkey punch
her down the stairs, and shoot your load all the way down.
Bonus points if the wad makes it all the way down.
An added bonus if the maneuver is done on a spiral staircase.
I gave Shirley the Tumbler last night, but she broke her neck during the fall. Since my wad landed on her face, I had to clean it off before dumping her body so there wouldn't be any DNA evidence.