What about someone who has a gag reflex? Is there a way to "train" your throat?
I've only gone down on 2 guys(in theaters), but couldn't get much more than the head of the cock in my mouth before gagging. I tried stroking their balls, which I like, but just couldn't take more than about 2 inches.
Do I need to practice with carrots, like Phoebe Cates in Fast Times at Ridgemont High? Yeah, I'm old.

How about 30 seconds?

As much as I love seeing a hard cock when watching porn, I always look at the balls.

When they are drawn up, I know the hard-on is for real. If they're sagging, it usually means the guy is barely keeping it up & is fucking really fast to try to keep it up long enough to cum.

Some people like balls that bounce around, I just think "tight" balls are a sign of someone who is really turned on.

I'm new here and mine is kind of small, but I agree with some of the other comments. A small hard dick is hot.

My only experience as a bottom was with a guy who was about 7", which I figure is about 2" too much for me.

There's a site called doublelist.com that looks just like Craigslist, but you can't post racy photos.