It looks like porn. Feels like power. The Butter Churner isn’t soft. One partner folded, legs high. The other, in control. Gravity pulls....

It starts well enough: you're relaxed, receiving, letting the warmth and rhythm build. But somewhere along the way, a tightness creeps...

It often begins subtly. Maybe you notice your erections feel a little tighter than before—less elastic, slightly uneven. Or perhaps...