This is why, for me, switch sessions can be a huge mind-fuck for me. My favorite type of session is where I start out dominant, and dominate her until I get into a nice dominant headspace. And then, she challenges me a little bit verbally, I move to discipline her, and with one swift move -- it has to be something radical, like grabbing and squeezing my balls really hard, or smacking them and then when I bend over penetrating my ass with a fingertip -- she asserts and gains control.

There's about 3-5 seconds in there that is one of the most heart-pounding thrills in all of bdsm for me ... that transition from, "I'm dominant, I own this bitch, I'm gonna f--" to "yes mistress I'm your bitch!", that happens SO FAST, is unbelievable. It is a completely different experience than just walking in, already feeling slightly submissive, and then transitioning into subspace from there.