Being passive in a sexual act does not make you a slut. Nor does it imply that the resulting sexual act is always theater.
Originally Posted by PhunkSpunk
When two guys are fucking, depending on the sexual position, normally one guy is doing more work than the other. In a missionary position the top does most of the work, but with the bottom (on top) sitting down on a dick, sometimes the bottom rides up and down and sometimes the bottom doesn't move and the top fucks up into him. During sex, each person has a role, but that doesn't make it theater.
As far as "Castro" showing up, I keep my doors locked. I would only use a sling with people I know and trust, in environments that I consider safe. The word "no" is also very effective.
One of main points in the previous post was that there are mechanical advantages of using slings for just plain good sex. Your fantasy of butt play being done in a sling is fine, but please don't assume that just because you add a sling to a scene, that it implies heavy role playing.
Think of the dotted line as Chandler standing in a room. The ball is Aiden in a sling, attached to the ceiling, swinging back and forth (in and out of Chandler). The arrows, Velocity (V) & Acceleration (A), show the approximate connection of Chandler's cock to Aiden's butt. (Ok the diagram isn't perfect.