I like deep throating dick, and I try to relax the back of my throat and swallow as it drives in. Also, when the head of the cock first hits the back of the throat, I use that as a turn on, that we are going for gold. It helps to have some control over the top, so he gets a signal from me when he can push it on in. If some guy just shows up and starts humping, that is a completely different scene and not likely to last long.
I also like to swallow dildos. I can get the long thin doubleheaders pretty much all the way in and hold it there. My partner sits on the floor with his back to a sofa, and I sit in his lap, facing away. I lean back into him, and he enfolds me with his arms. I am able to totally relax like that. He then takes the dildo and puts it in my mouth and starts sliding it back. I go through the relaxing of my throat and back of my mouth, and it really does turn me on to feel it hit the back of my mouth. I then just start swallowing while he feeds it in, and it follows the curve of my jaw and neck down into my chest. Once it is in, I can even breathe around it, which eliminates the crisis of coming up for air. I also keep my stomach relaxed, so there is no reflux. It feels incredible. After a couple of minutes, I tighten up and start to push it out, and he pulls it and lets me push it out. That is another rush, as it piles out of my throat. "A good time is had by all."