More answers to your questions...
I alternate between looking at new internet content and favorites from my collection, including some of yours :-)
I also alternate between a lot of friction with lubrication and a dry, teasing tickle.
My balls don't hurt right away, in fact they feel empty (as cliche as that may sound). Although they're noticeably sore the following day! My whole body feels drained in contrast to the strength and power that surges through me pre-and-during ejaculations. And I really enjoy the first piss after shooting a few loads in a row.
I'm always thirsty as a horse and sleep in utter relaxation for the next several hours.