Hmm...I almost always get some sort of
visuals with anything close to stimming.
Like walking with the wind, my fingers
twitch like mad, and I picture blood
running down my face, or the ocean
splashing against me.
Strongest comes from 'drumming' which
is really fast flapping. Used to do it a LOT,
but less now. It's like watching a movie.
I control the storyline, sort of, but it's
really vivid.
Masturbation is similar, but always sexual
imagery.