Writing around a scene?

Story by WeaponZero

I have a lot of unfinished stuff I'd like to finish and eventually post, but I'd like to ask a question. How many people here start out envisioning a single scene around their head, and then write everything around that one scene?

Example: a scene popped into my head of a futa girl performing a backbreaker (the wrestling move) on a man, only instead of her thigh, it's her erect cock he's slamming her down on, and it doesn't waver even a hair as she slams his body down on it, breaking his back. I'm now attempting to write a story that leads up to that scene and expands on it. Does anyone else do this? And does it work for you or does it often lead to unfinished ideas?